Harmonium is the RMHS contemporary a cappella group. It is an extracurricular group that meets before school on Tuesday and Thursday mornings. It is an auditioned ensemble of 12 voices (soprano, alto, tenor, bass, and vocal percussion) that performs a cappella arrangements of popular music from all eras. Due to the nature of the group, members must have strong music reading skills, a confident, engaging stage presence, and excellent intonation (pitch accuracy). Harmonium performs at major concerts and community events throughout the year. Auditions are held within the first couple weeks of the start of classes in the fall.