There are many potential names for such a group:An ennead.A baseball team.The Supreme Court.In music a combination of nine instruments or voices is a nonet.
The Jackson 5 was a musical group. The group included brothers Jackie, Tito, Jermaine, Marion and Michael Jackson.
The mandolin is a musical instrument. The mellophone is a musical instrument.
Fleetwood Mack, The Four Seasons and The Four Freshman are famous musical groups.
septet
Nirvana,Nine Inch Nails
the leaves
journey
Nonet
Nine - musical - was created in 1982.
One possible name is an Orchestra.
Hinder
claire
Erasure The Eagles Exile
It is called acapella.
Duran Duran
Korn