A musical ensemble is a group of two or more musicians who perform instrumental or vocal music.In each musical style different norms have developed for the sizes andcomposition of different ensembles, and for the repertoire of songs ormusical works that these ensembles perform.
In classical music, trios or quartets either blend the soundsof instrument families (e.g., piano, strings, and winds) or grouptogether instruments from the same instrument family, such as stringensembles or wind ensembles. In jazz ensembles, the instrumentstypically include wind instruments (one or more saxophones, trumpets,etc.) one or two chordal "comping" instruments (electric guitar, piano,or organ), a bass instrument (electric bass guitar or double bass), anda drummer or percussionist. In rock ensembles, often called bands,there are usually several guitars (one or two electric guitars, a bassguitar, and in some cases, one or more acoustic guitars), a keyboardplayer (either a Hammond organ, a piano, an electric piano, or an electronic synthesizer), and a drummer.