Quote Originally Posted by Philles/Motown Gary View Post
[NOTE: "Hung On You" was the intended A-Side of Philles 129. However, radio deejays flipped the record over and B-Side "Unchained Melody" became the hit. The record label credits Phil Spector as Producer. However, in his book, "The Time Of My Life", Bill Medley claims that he, himself, produced it -- not Phil. Believe what you may.
The 45 label didn't initially credit Phil Spector as producer of "Unchained Melody", though he was always credited as producer on "Hung on You". You can see some of the pressings - including promo labels - at the link below.

http://www.45cat.com/record/129