stemgroep

Stemgroep is a Dutch term that refers to a group of singers designated to a particular vocal part within a choir or vocal ensemble. In practice, a stemgroep corresponds to a voice group (for example soprano, alto, tenor, bass) and is responsible for singing lines in that range. The members of a stemgroep rehearse separately to develop technique and blend, before joining the other groups for full ensemble rehearsals and performances. The size of a stemgroep varies with the choir and repertoire and can range from a few singers to a larger section. In many choirs, there are multiple subgroups within a part (for instance two soprano groups) to allow internal balance and flexibility during rehearsal and performance.

The term is commonly used in Dutch-speaking choral settings, music education, and choir administration. It emphasizes the organizational aspect of singing, complementing the musical content by allocating voices, assigning repertoire, and coordinating dynamics and diction across voice parts. While stemgroepen are primarily about vocal assignment, some pieces require close harmonies or unison passages among stemgroepen, and conductors may adjust the division depending on acoustics and ensemble size.

The concept aligns with terms in other languages such as "voice part" or "vocal section." Etymologically, stem means voice or pitch, and groep means group, together forming "voice group." See also: choral music, vocal part, choir.