Deletion of Deep Treble

Comment: I'm gonna go out on a limb and say they pass #C8 for what is a notable award in their genre. If that doesn't fly, then those same International Championship of Collegiate A Cappella|ICCA awards go towards notability per #C7|C7 & #C9|C9
Stance: keep
Cited policy: Wikipedia:Notability (WP:MUSIC||WP:MUSIC||WP:MUSIC)