In Western music, there are 4 clefs that are most commonly used. These are: The Treble Clef: Arguably used the most frequently, the treble clef is utilized for higher-pitched instruments such as the violin, flue, soprano voice, and piano. The Alto Clef: Otherwise known as the ‘The C Clef’ the alto clef is primarily used for violas. The Tenor Clef: Most often utilized for lower to mid-tier instruments, the tenor clef is used for instruments such as the cello, euphonium, and bassoon. The Bass Clef: Also known as ‘The F Clef’ the bass clef is used for lower-pitched instruments such as the double bass, bass guitar, and trombone.