sep·tet
noun/sepˈtet/
/sepˈtet/
- [countable + singular or plural verb] a group of seven musicians or singers
七重奏乐团；七重唱组合 - [countable] a piece of music for seven musicians or singers
七重奏（曲）；七重唱（曲）
Word Originearly 19th cent.: from German Septett, from Latin septem ‘seven’.