Music symbols are essential components of written music. They include clefs, which indicate the pitch range of a staff, and rests, which indicate pauses in the music. Clefs are represented by five-letter symbols such as treble, bass, alto, and tenor. Rests are also represented by five-letter symbols such as whole, half, quarter, and eighth. Together, clefs and rests provide the necessary information for musicians to accurately interpret and perform written music.