Musical symbols are essential components of written music. Sharps, which are represented by the symbol '#', are used to raise a note by one semitone. Clefs are symbols that indicate the pitch of the NOTES written on the staff. NOTES are the basic elements of written music, and they can be represented by different symbols such as a filled-in circle or an open diamond. Rests are symbols that indicate a period of silence in a piece of music. Flats, which are represented by the symbol 'b', are used to lower a note by one semitone. LAS stands for 'Larghetto assai', which is a tempo marking indicating a slow and broad tempo. Segnos are symbols that indicate a repeat of a section of music.