What is C4 music?
Sarah Scott
Updated on May 15, 2026
In that system, middle C (the first ledger line above the bass staff or the first ledger line below the treble staff) is C4. An octave higher than middle C is C5, and an octave lower than middle C is C3.
What note is C4 on the piano?
This beginner piano lesson is all about the musical note, middle C. This note is designated C4 in scientific pitch notation because of its position as the fourth C key on an 88-key piano. It has a frequency of 261.6 Hz.What is another name for C4 music?
Each octave begins on C; so C3 is in the third or “small octave,” and C4 is in the fourth or “one-line octave.”.Is C4 middle C on a piano?
Normal Octave notation is given here in the International Organization for Standardization ISO system, Here octave -1 (minus one) is C0 this means therefore that middle C will be C4 being the 4th C on a 88 note piano.What octave is C4?
The 7 Octave Registers of the PianoLet's start with the three octave registers that make up the center of the keyboard (and are the most-used), Octave 3 (from the note C3 to B3), Octave 4 (from C4 to B4), and Octave 5 (from C5 to B5):