Deletion of Cathedral Quartet

Comment: has a major claim of significance with five grammy nominations and also has significant coverage in reliable sources such as an AllMusic bio https://www.allmusic.com/artist/the-cathedral-quartet-mn0000064225/biography here which I will add to the article. They also have significant press and book coverage and therefore deserve to be included, passing 
Stance: keep
Cited policy: Wikipedia:Notability (WP:NMUSIC)