Treble Clef: The treble clef represents higher pitches in music and is commonly used for instruments like piano and flute.
Bass Clef: The bass clef indicates lower pitches and is frequently seen in sheet music for bass guitar and tuba.
Key Signature: This term refers to the sharps or flats placed at the beginning of a staff to indicate the tonality or key of a piece. It helps musicians know which notes to play differently throughout the composition.