triple flat

Although very uncommon, a triple flat ( ) can sometimes be found. It lowers a note three semitones, or a whole tone and a semitone. And theoretically, the symbol of a quadruple flat or beyond could be also considered sometimes.

In music, flat, or Bemolle, means "lower in pitch." In music notation, flat means "lower in pitch by a semitone (half step)," and has the symbol (♭).

This term refers an accidental symbol that raises a note by three semitones (or three half steps). This symbol is indicated by a sharp symbol (♯) and a double sharp symbol (𝄪) preceding the note.

♭♭ DUH-bul flat An accidental sign consisting of two flat symbols (♭♭) that lower a note by two half steps (two semitones). The double flat symbol alters the pitch of the note to which it is attached as well as any subsequent occurrence of the same note (identical line or space) in the same measure.

The key of D Major has two sharps - F# and C#. Again, D is the only major key with two sharps. As a third example, the key of Eb Major uses the notes Eb, F, G, Ab, Bb, C, and D. Eb Major has 3 flats - Bb, Eb, and Ab, and it's the only major key with 3 flats.

The other symbol you'll see often is called a sharp symbol. This is the opposite of a flat where a flat lowers the note a sharp raises the note by a half step or one key up on the piano.

Flat notes are notes that sound a semitone lower than notes that appear on the lines and spaces of a musical staff. As an example, the note B is represented on the third line of the treble clef staff. The note B-flat is indicated with that same notehead with a ♭ symbol placed to the left of it.

It would use the first 4 flats of the order of flats - Bb, Eb, Ab, and Db. Starting on the root Ab, the key of Ab major is spelled Ab, Bb, C, Db, Eb, F, and G. It contains those 4 flats and the rest of the notes are natural.

A sharp (♯) raises a note by a semitone; a flat (♭) lowers it by a semitone; a natural (♮) restores it to the original pitch. Double sharps (×) and double flats (♭♭) indicate that the note is raised or lowered by two semitones. Sharps or…

A sharp raises a note or tone, and a flat lowers a note or tone. A sharp note makes a tone sound a semitone or pitch higher. A flat makes a note sound a semitone or pitch lower. Sharps and flats have different symbols (# and b respectively). They can be changed from accidentals to natural notes with a natural sign.

key of Eb Major As a third example, the key of Eb Major uses the notes Eb, F, G, Ab, Bb, C, and D. Eb Major has 3 flats - Bb, Eb, and Ab, and it's the only major key with 3 flats.

Also note that sharps and flats in key signatures affect all notes of that letter-name, not just in that specific octave. So if you have two flats, it means that all Bs are B-flats, and all Es are E-flats, regardless of octave.