Deletion of ABBA unreleased songs

Comment: I respectfully disagree with your opinion, but to address your concern I will clarify my reasoning. The notability of ABBA and their music is not in question. The article details a little-known aspect of the group's music that was not previously covered on Wikipedia. The article meets the requirements of 
Stance: comment
Cited policy: Wikipedia:Notability (WP:MUSIC)