Work trapeze artistes are ill-advised to have

• Large jazz combo
• Group: artist's a different leader
• Trio times three
• Baseball starting lineup, e.g
• Large combo
• Group of nine, as in music
• Louis Spohr chamber work
• Cards in play at once, e.g
• Nine-person musical group

Wikipedia Word definitions in Wikipedia
Franz Lachners Nonet in F major is a composition for chamber ensamble published in 1875.