Showtime is the preparation show choir organized for students interested in the performance of modern, popular, rock, jazz, and musical theater music. Emphasis is placed on becoming a total performer – both aural and visual aspects are stressed. Showtime is directed by David Haas.

Singing and dancing are required in rehearsal and in auditions. The group rehearses 2-3 hours per week outside of school. Students selected for membership are required to attend all rehearsals and performances, travel to all competitions and festivals, and purchase or rent a performance uniform. Showtime is an extension of the curricular choral ensembles.  

The group includes singers, a full combo band and stage crew.  All singers in Showtime are also involved in one of West High's curricular choirs.