Notation & Symbols
Middle C
Middle C is the C nearest the center of the piano keyboard, called C4 in scientific pitch notation. It is written on a ledger line between the treble and bass staves and is the reference point for every clef.
Middle C is the C closest to the middle of the piano keyboard. In scientific pitch notation it is C4, the C that begins octave 4 in a numbering system based on C0. It also happens to be the fourth C from the left on a standard 88-key piano; the octave number does not depend on the keyboard's size. When the A above it is tuned to 440 Hz (see A440), middle C sounds at about 261.6 Hz.
Finding it on the piano
Every C is the white key just to the left of a group of two black keys. Middle C is the one roughly in front of you when you sit at the center of the instrument; on an 88-key piano it is slightly to the left of the exact center. On a smaller keyboard, the number of keys below middle C varies. Use its octave label or the instrument's manual rather than assuming it is the fourth C from the left.
Middle C on the staff
Middle C is the note that joins the two staves of the grand staff. It is written on a ledger line just below the treble staff, or on a ledger line just above the bass staff. Both spellings mean the same key; which one you see usually depends on which hand plays it.
The C clef is built around this note: whichever line the C clef points to is middle C. That makes middle C the anchor for every clef. Treble-clef notes count up from it, bass-clef notes count down from it.
Middle C in beginner piano
Many beginner methods start with both thumbs sharing middle C, or with the right thumb on middle C in the C five-finger position. It is a convenient home base because the notes on either side are written right where the two staves meet, so reading and playing grow outward together.
Octave numbers
In scientific pitch notation the octave number changes at every C: B3 is the B just below middle C, and D4 the D just above it. Some keyboards and music programs number octaves differently and call middle C "C3" (a few say "C5"). The note itself does not change: in MIDI it is note number 60 either way.
Practice reading around middle C with Name the notes: across middle C, and find it on the keys with The piano keyboard.
Common questions
Is middle C C4 or C3?
In scientific pitch notation, used by most theory books, middle C is C4. Some keyboards and music programs label it C3; the key is the same (MIDI note 60).
Where is middle C in the treble clef?
On the first ledger line below the treble staff. In the bass clef it is on the first ledger line above the staff.
Practice it: free worksheets
Name the notes: across middle CWrite a letter in every empty box. The right hand stays in its five-finger position — middle C up to G in the treble clef. The left hand reads five bass-clef notes: F on the fourth line, up to middle C. Put them together and it is one unbroken ladder of letters.
The piano keyboardA piano has 88 keys but only seven letter names, A to G, used over and over. The black keys show you where each letter lives.
The Bass Clef & the Grand StaffThe bass staff holds the lower notes, usually played by the left hand. It works just like the treble staff (Handout 351), but its clef names a different line.
Note reading chartEvery white key from C2 (two ledger lines below the bass staff) to C6 (two above the treble) — and the key it belongs to, straight down the column. Learn it in Handouts 351 (treble) and 352 (bass & grand staff).
The C 5-Finger ScaleYour very first scale: five neighboring notes that sit right under your hand — one note for each finger. In C, those notes are C · D · E · F · G.