These come to mind right away. What others are there? Deborah Gibson & Lamont Dozier co-produced, arranged, & wrote songs for her "Anything Is Possible" album, Deborah Gibson singing back-up for The Circle Jerks, Tammy Wynette with The KLF on "Justified & Ancient", Gloria Estefan & NSYNC, Lorna Luft w/The Village People, Connie Francis & Hank Williams, Jr....