Ledger lines explained

Ledger lines are short lines drawn above or below the staff for notes too high or too low to fit on its five lines. Count them from the staff outwards, as you count the staff's own lines: the first line above the treble staff is A, the first below it is middle C.

Ledger lines are short lines drawn above or below a staff for notes that are too high or too low to fit on its five lines. They carry the staff on, one line at a time, and you count them exactly as you count the staff's own lines: from the staff outwards, each line and each space one letter further. The first ledger line above the treble staff carries A; the first below it carries middle C.

This guide covers every ledger-line note from low C (C2) to high C (C6), in both clefs, with the shortcuts that make them quick to read.

What ledger lines are

A staff has five lines and four spaces. That is enough for about nine white keys, and a piano has 52. When a note goes past the edge of the staff, the music adds short lines just for that note. They are called ledger lines (sometimes spelt leger lines).

Three things are true of every ledger line:

It is spaced exactly like a staff line. The gap from the staff's outer line to the first ledger line is the same as the gap between two staff lines. So the pattern of line, space, line carries straight on.
It is only as wide as the note. Each note gets its own short lines. Two notes next to each other on the page don't share one long line.
It is only drawn out to the note. A ledger line appears for each line between the staff and the note. A note in a space beyond a ledger line has no extra line of its own.

The treble and bass staves use ledger lines the same way. Only the letter names differ, because the clef says which note each line is.

How to count them

Count out from the staff, one letter at a time, alphabetically going up and backwards going down. Letters run A to G and then start again.

Going up from the treble staff. The top line is F. The space just above it is G. The first ledger line is A. The space just above the first ledger line is B. The second ledger line is C.

Going down from the treble staff. The bottom line is E. The space just below it is D. The first ledger line below is C (middle C). The space just below that line is B. The second ledger line below is A.

The same counting works for the bass staff, starting from its own outer lines: A on top, G at the bottom.

A quicker way, once you know the pattern: ledger lines go up and down in skips, one letter missed each time, just like staff lines. The lines above the treble staff are A, C, E. The lines below it are C, A, F. You rarely need more than two.

Every ledger note from C2 to C6

These are the notes just outside each staff, and the ones on and beside the first two ledger lines. They are the notes Octotune's Unit 9 teaches. Middle C is C4; each C starts a new number going up.

Above the treble staff

Note	Where it sits	Ledger lines drawn	On the keyboard
G5	The space just above the staff	None	The second G above middle C
A5	On the first ledger line above	1	The second A above middle C
B5	Just above the first ledger line	1, below the note	The second B above middle C
C6	On the second ledger line above	2	Two octaves above middle C

Below the treble staff

Note	Where it sits	Ledger lines drawn	On the keyboard
D4	The space just below the staff, touching its bottom line	None	The D just above middle C
C4 (middle C)	On the first ledger line below	1	Middle C
B3	Just below the first ledger line	1, above the note	The B just below middle C
A3	On the second ledger line below	2	The first A below middle C
G3	Just below the second ledger line	2, above the note	The first G below middle C

Above the bass staff

Note	Where it sits	Ledger lines drawn	On the keyboard
B3	The space just above the staff	None	The B just below middle C
C4 (middle C)	On the first ledger line above	1	Middle C
D4	Just above the first ledger line	1, below the note	The D just above middle C
E4	On the second ledger line above	2	The first E above middle C

Below the bass staff

Note	Where it sits	Ledger lines drawn	On the keyboard
F2	The space just below the staff	None	The second F below middle C
E2	On the first ledger line below	1	The second E below middle C
D2	Just below the first ledger line	1, above the note	The second D below middle C
C2	On the second ledger line below	2	Two octaves below middle C

Further out

The pattern carries on. Above the treble staff the third ledger line is E6 and the fourth is G6. Below the bass staff the third ledger line is A1. Music rarely goes much further on ledger lines. Composers write 8va over high notes instead ("play an octave higher than written"), 8vb under low ones, or change clef.

The shortcuts: mirror pairs and shared keys

Mirror pairs

Put the treble and bass staves together, as piano music does (the grand staff), and the pattern is symmetrical around middle C:

The second ledger lines are both C. High C (C6) is two lines above the treble staff. Low C (C2) is two lines below the bass staff. Learn one and you have the other.
The first ledger lines outside the grand staff are A and E. A5 is one line above the treble staff. E2 is one line below the bass staff.
Middle C is one ledger line from either staff. One line below the treble, or one line above the bass: the same key.

So between the staves there is one ledger line, middle C. Outside them, the first lines are A (above) and E (below), and the second lines are both C.

One key, written two ways

The notes around middle C can be written in either clef. The key on the piano is the same; the clef tells you which hand is expected to play it.

Key	In the treble clef	In the bass clef
E4	The bottom line	The second ledger line above
D4	The space just below the staff	Just above the first ledger line
C4, middle C	The first ledger line below	The first ledger line above
B3	Just below the first ledger line	The space just above the staff
A3	The second ledger line below	The top line
G3	Just below the second ledger line	The top space

This is why an E written on two ledger lines above the bass staff is the very same key as the E on the treble staff's bottom line. Composers use ledger lines near middle C to keep a line of music in one hand's staff instead of jumping between staves.

Why middle C sits on a ledger line

Think of the grand staff as one tall staff of eleven lines, with the middle line left out so the eye can tell the halves apart. That missing line is middle C. When a note needs it, it comes back as a short ledger line, under the treble staff or over the bass staff. It is the same line either way, which is why middle C is the same key in both clefs.

Memory aids

"A above, C below" for the treble: the first ledger line above is A, the first below is middle C.
"Two lines out is C": the second ledger line above the treble and the second below the bass are both C, two octaves from middle C.
Count from the staff, never from the note. Start at the staff's outer line, which you know, and count out: space, line, space, line.
Lines skip, spaces skip. Ledger lines above the treble are A, C, E. Ledger lines below the bass are E, C, A. Each is a skip, a third, from the one before.

Mnemonics like "Every Good Boy Deserves Fun" stop at the edge of the staff. Counting outwards from a note you know (a landmark) works everywhere. More on memory aids, and when to drop them.

Common mistakes

Counting ledger lines from the wrong end. Always start from the staff and count outwards. Starting from the note's end gives you the wrong line.
Not seeing whether the note is on the line or beyond it. B5 and C6 both show ledger lines: B5 sits above one line, C6 has a line through its head. Look at the note head first: is there a line through its middle?
Reading B3 in the treble as D. Both hang under a line. D hangs under the staff itself; B hangs under middle C's short ledger line, a step lower than C.
Reading a ledger note in the wrong clef. An A on two ledger lines below the treble staff is A3, the bass staff's top line. The same position below the bass staff would be C2. Check the clef at the start of the line before counting.
Playing in the wrong octave. A5 is not the A just above middle C (that is A4, in the treble's second space). The first ledger line above the staff is one octave higher again.

How to practise

A few minutes a day beats a long session once a week.

Learn the anchors first. Middle C (one line from either staff), A5 (first line above the treble), E2 (first line below the bass), and the two outer Cs on the second lines. Play each one, eyes on the page, not the keys.
Step out from them. From A5, play G5 (the space before it), then B5 (the space after). From E2, play F2 and D2. Say the direction as you go: "down a step, up a step".
Play the mirror pairs back to back. High C, then low C. Middle C in the treble, then middle C in the bass. Your hands learn that the page is symmetrical.
Mix them with notes on the staff. Ledger notes are hardest when they turn up among ordinary ones. Use note cards that draw from both.
Read real music. Pieces that climb above the treble staff are the best practice there is. The tune of Satie's Gymnopédie No. 3 reaches A5; the tune of Little Toy Lost, a short piece in Octotune's library, climbs to high C.

How Octotune helps

Octotune's adult path teaches ledger lines in Unit 9, after both staves are secure. It starts with the notes round middle C in both clefs, then the notes above the treble and below the bass, out to C6 and C2. Each new note is met on the staff and on the keys, then practised on note cards, mixed exercises and short phrases, and finally in real pieces.

Because the app hears your keyboard, every card is answered by playing, not by tapping a letter. Notes you are slow on come back more often. Open Octotune to try it.

Next: The grand staff shows how the two staves fit together at middle C. Where is middle C? finds it on the keys and on both staves.

Questions

What note is on the first ledger line above the treble staff?

A, the A an octave above the A in the treble's second space (A5). The note just above that ledger line is B, and C sits on the second ledger line.

What note is on the first ledger line below the treble staff?

Middle C (C4). D hangs just under the staff, touching its bottom line; B sits just under middle C's ledger line, and A is on the second ledger line below.

What note is on the first ledger line above the bass staff?

Middle C again: the same key, written above the bass staff. D sits just above that line, and E is on the second ledger line above.

What note is on the first ledger line below the bass staff?

E (E2). F sits in the space just under the staff, D just under the first ledger line, and low C (C2) on the second ledger line below.

Is high C on two ledger lines?

Yes. The C two octaves above middle C (C6) sits on the second ledger line above the treble staff. Its mirror, the C two octaves below middle C (C2), sits on the second ledger line below the bass staff.

How do you count ledger lines?

The same way you count the staff's own lines, from the staff outwards. Each line and each space is the next letter: the space next to the staff, then the first ledger line, then the space beyond it, then the second ledger line.

Every note on ledger lines, C2 to C6

Treble clef

G3 (treble clef)

On the staff: Just below the second ledger line below the treble staff.
On the keys: Between the first and second of the three black keys, in the octave below middle C.
From a landmark: A fourth below middle C: under the second ledger line below the treble staff.
To remember: The same key as the bass staff’s top space. Written in the treble, it tells the right hand to reach down for it.

A3 (treble clef)

On the staff: The second ledger line below the treble staff.
On the keys: Between the second and third of the three black keys, in the octave below middle C.
From a landmark: A skip below middle C: on the second ledger line below the treble staff.
To remember: The same key as the bass staff’s top line. Count the ledger lines down from the staff as you would count lines on it.

B3 (treble clef)

On the staff: Just below the first ledger line below the treble staff.
On the keys: Just right of a group of three black keys, in the octave below middle C.
From a landmark: A step below middle C: hanging just under its ledger line.
To remember: Middle C’s neighbour on the way down, read by the right hand. Round middle C, the clef says which hand, not the key.

C4 (treble clef)

On the staff: The first ledger line below the treble staff.
On the keys: Just left of a group of two black keys, the C nearest the middle of the keyboard.
From a landmark: Middle C, the first landmark: one short ledger line below the treble staff.
To remember: It belongs to both staves: the same line, drawn under the treble or over the bass. Every other note is counted from a landmark like this one.

A5 (treble clef)

On the staff: The first ledger line above the treble staff.
On the keys: Between the second and third of the three black keys, in the octave above middle C.
From a landmark: A step above high G: on the first ledger line above the treble staff.
To remember: The first ledger line above carries A; the first below carries middle C. Count ledger lines like the lines of the staff.

B5 (treble clef)

On the staff: Just above the first ledger line above the treble staff.
On the keys: Just right of a group of three black keys, in the octave above middle C.
From a landmark: A skip above high G: just above the first ledger line.
To remember: Count out from the staff as you count on it: space, ledger line, and B just past it.

C6 (treble clef)

On the staff: The second ledger line above the treble staff.
On the keys: Just left of a group of two black keys, two octaves above middle C.
From a landmark: Two octaves above middle C: on the second ledger line above the treble staff.
To remember: Count ledger lines as you count the staff’s own lines: the first above carries A, the second carries C.

Bass clef

C2 (bass clef)

On the staff: The second ledger line below the bass staff.
On the keys: Just left of a group of two black keys, two octaves below middle C.
From a landmark: Two octaves below middle C: on the second ledger line below the bass staff.
To remember: Low C mirrors high C: two ledger lines, below the bass instead of above the treble.

D2 (bass clef)

On the staff: Just below the first ledger line below the bass staff.
On the keys: Between the two black keys, two octaves below middle C.
From a landmark: A skip below low F: just below the first ledger line under the bass staff.
To remember: Count down from the staff: space, ledger line, then D hanging under it.

E2 (bass clef)

On the staff: The first ledger line below the bass staff.
On the keys: Just right of a group of two black keys, two octaves below middle C.
From a landmark: A step below low F: on the first ledger line below the bass staff.
To remember: The first ledger line below the bass carries E; the first above the treble carries A.

C4 (bass clef)

On the staff: The first ledger line above the bass staff.
On the keys: Just left of a group of two black keys, the C nearest the middle of the keyboard.
From a landmark: Middle C: one short ledger line above the bass staff.
To remember: The same key as treble middle C. Which staff it is written on says which hand plays it.

D4 (bass clef)

On the staff: Just above the first ledger line above the bass staff.
On the keys: Between the two black keys, in middle C’s octave.
From a landmark: A step above middle C: just above its ledger line, over the bass staff.
To remember: The left hand reaching up: the same key as the D under the treble staff.

E4 (bass clef)

On the staff: The second ledger line above the bass staff.
On the keys: Just right of a group of two black keys, in middle C’s octave.
From a landmark: A skip above middle C: on the second ledger line above the bass staff.
To remember: The same key as the treble staff’s bottom line. In the bass clef it takes two ledger lines.

Practise it: Unit 9, Ledger lines

The Octotune team · Updated 23 September 2026