Deletion of Trembulo

Comment: I searched for this during the RFC but came up dry other than a website that "discovered" this instrument care of Wikipedia citogenesis. No relevant hits in Google Books. No |RS. No deal. (Note that there is a full Commons category to clean up if this is deleted: :commons:Category:Trembulo
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)