On Mondays, singers from all over Denver join together to rehearse and collaborate. As singers progress through the ability-based choir levels, they continue to strengthen their musical skills and knowledge as well as their friendships.

Summit: an advanced level performance group for singers with exceptional skill and dedication with elite performance opportunities.  This choir tours once a year.

Fourteeners: a select group of advanced members representing RMCC in community performances and collaborations. This choir tours once a year.

Mountain Men:  a small men's training group with changing and changed voices.

Mountain Aires:  a small select men's group that tours once a year.

Altitude: a 12-voice mixed acappella group comprised of advanced high school singers.  This choir tours once a year -- both nationally and internationally.

Conducting Class I:  By invitation, these RMCC singers learn basic conducting skills once a week.

Conducting Class II: For those RMCC singers who have completed one year of Conducting Class I, this class is designed to teach a more advanced level of conducting, with some practical experience directing one of the large RMCC choirs.