Flat Signs
This is a flat sign.
A flat sign is used to indicate that a note is played a semitone lower than its original pitch. In this case, the note Bb is one semitone lower than B. Like the sharp sign, a flat sign is written immediately before the note to which it applies.
The Note B Flat (Bb)
When a flat note is written on the staff, the flat sign is placed before the note.
The note Bb uses the same fingering as the note F. Practice alternating between these two notes until you can easily play either one.
The flat sign affects all B notes within the bar in which it appears. For example, in bars 2 and 4 the b sign appears before the first B in each bar. The flat also applies to all other B notes within that particular bar. The effect of a flat sign is canceled by a bar line, meaning that a new flat sign is needed to indicate a new Bb note in the following bar.
