Accidentals and Naturals

Sharps, Flats, and Naturals Within a Piece Key signatures set the "default" sharps or flats for an entire piece. But sometimes a composer wants to temporarily change a note — raising or lowering it outside the key. These temporary changes are called accidentals. The Three Accidental Symbols # (Sharp): Raises the note by one half step. b (Flat): Lowers the..

The full lesson continues with step-by-step practice, worked examples, and the end-of-lesson quiz.