Which singer had a 1988 No. 1 hit with the a cappella song "Don't Worry, Be Happy"?

Which 1988 Tom Cruise film had a soundtrack featuring both "Don't Worry, Be Happy" and "Kokomo"? Who released the 1988 album "Faith"? Which 1988 film is based on the 1964 disappearance and murder of three civil rights workers in the South? Which 1988 film features a will written in Acme disappearing and reappearing ink? In the 1988 Clint Eastwood film "Bird," Forest Whitaker played which jazz saxophonist? Who starred as Armed Forces Radio DJ Adrian Cronauer in the 1987 film "Good Morning, Vietnam"? In which 1988 film does Melanie Griffith's character declare, "I have a head for business and a bod for sin"? John Cusack in "Eight Men Out" (1988) and Ray Liotta in "Field of Dreams" (1989) both played members of which baseball…