The contra-alto clarinet is used mostly in concert bands and clarinet choirs, where it usually, though not always, plays the bass line of a piece of music. While there are few parts written specifically for it, the contra-alto can play the baritone saxophone part and sounds the same pitch; it is also possible to read parts written in the bass clef for instruments pitched in C (such as bassoon or tuba) as if the part were in the treble clef, while adjusting the key signature and any accidentals as necessary by adding three sharps to the music. It is occasionally used in jazz, and a few solo pieces have been written for it. The contra-alto clarinet is also used in a few Broadway pit orchestras, with its parts being written in reed books as a doubler instrument (e.g. with soprano clarinet and bass clarinet.) The contra-alto clarinet can also be used in marching bands where it shares the parts of the sousaphone or baritone saxophone. However, because of its size and weight, many bands choose not to march them in parades.