View credits, reviews, tracks and shop for the Vinyl release of "If I Did Know" on Discogs. View credits, reviews, tracks and shop for the Vinyl release of "Spanish Harlem / If I Did Know" on Discogs. Listen to If I Did Know on Spotify. Roy Shirley · Song · If I Did Know - Single. Roy Shirley. Reggae · Preview. Song. Time. If I Did Know. 1. PREVIEW. Octo. 1 Song, 3 Minutes. Val Bennett / Roy Shirley - Spanish harlem / If I Did Know. Released: Format: 7". Label: Trojan. Producer: Lee Perry. Check out If I Did Know by Roy Shirley on Amazon Music. Stream ad-free or purchase CD's and MP3s now on Keyword, Artist, Title, Riddim, Label, Article ID. Format: 10" Vinyl, 12" Vinyl, 7" Vinyl, Accessory, Book, Cassette, CD, DVD (Video), LP Vinyl. Play and download "If I Did Know" by "Roy Shirley" - and other songs including "Cherry Oh Baby", "Hold On", "Mule Train" Reggae, released on January Music Video. Roy Shirley - If I Did Know. Featured In. Album. If I Did Know - Single. Roy Shirley. Top Songs By Roy Shirley. Spanish Harlem / If I Did Know. Side A. Side B. Artist Val Bennett / Roy Shirley. Format 7. Producer Bunny Lee. Label Trojan (UK). Condition VG.