Answer:
1988: Linda Ronstadt and James Ingram’s “Somewhere Out There” over U2’s “I Still Haven’t Found What I’m Looking For”
1985: Lionel Richie’s Can’t Slow Down over Prince’s Purple Rain and Bruce Springsteen’s Born in the U.S.A
1970: Joe South’s “Games People Play” over Blood, Sweat & Tears’ “Spinning Wheel
1970: Blood, Sweat & Tears’ Blood, Sweat & Tears over the Beatles’ Abbey Road, Johnny Cash’s At San Quentin, and Crosby Stills & Nash’s Crosby Stills & Nash