A clef assigns one particular pitch to one particular line of the staff on which it is placed. This also effectively defines … See more

Accidentals modify the pitch of the notes that follow them on the same staff position within a measure, unless cancelled by an additional accidental.
Key signatures indicate which notes are to be played a… See more

Most music has a rhythmic pulse with a uniform number of beats—each segment of this pulse is shown as a measure. Time signatures indicate the number of beats in each measure (the top number) and also show what … See more