Deletion of Oversinging

Comment: It's not the most "respectable" article, because it's about an informal concept (which is not a synonym for "melisma" at all). However, its sources as used are perfectly reliable in this context—pop music and music ed—so  is amply met. It's not as classical-canonical as vibrato, but it's important to the people it's important to and it's not our job to say those people are ignorable
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)