Piece with nine parts

• Set of nine voices
• Nine fish can swim freely with this?
• Expensive wedding band, maybe
• The planets of the Solar System, at one point ('90s kids remember)
• Medium-sized jazz combo
• Piece for an ennead
• Sextet plus a trio
• Largish combo

Wiktionary Word definitions in Wiktionary
n. 1 (context music English) a composition written for nine instruments or nine voices 2 a group of nine nuclear or subatomic particles 3 (context computing English) A byte of nine bits.

Wikipedia Word definitions in Wikipedia
Nonet may refer to: nonet (music) , a composition which requires nine musicians for a performance In poetry , a nonet is a nine line poem, with the first line containing nine syllables, the next eight, so on until the last line has one syllable In computer ...