George M!
Apr 10 Musical "George M!", based on the life of Broadway star George M. Cohan, opens at Palace Theater NYC for 435 performances
Fade Out-Fade In
Apr 17 Betty Comden & Adolph Green and Jule Styne's musical "Fade Out-Fade In", featuring Carol Burnett, Dick Shawn, and Tina Louise, closes at Mark Hellinger Theater NYC after 271 performances
- Apr 20 British rock band billed as "Roundabout" debuts in Kastrup, Denmark; after a brief tour of Scandinavia, they change their name to "Deep Purple"
- Apr 23 Ernest Gold and Anne Croswell's musical "I'm Solomon", starring Dick Shawn, opens at Mark Hellinger Theater, NYC; runs for 7 performances
- Apr 27 Ernest Gold and Anne Croswell's musical "I'm Solomon", starring Dick Shawn, closes at Mark Hellinger Theater, NYC, after 7 performances
- Apr 27 Paul Nassau and Oscar Brand's musical "Education of H*Y*M*A*N K*AP*L*A*N", starring Tom Bosley, closes at the Alvin Theater, NYC, after 28 performances
- Apr 29 Galt MacDermot, Gerome Ragni and James Rado's hippie musical "Hair" opens at Biltmore Theater, NYC; runs for 1750 performances