Blow-Up is a soundtrack album by Herbie Hancock featuring music composed for Michelangelo Antonioni's film Blow-Up released in 1966 on MGM Records. The album features performances by Hancock, Freddie Hubbard, Joe Newman, Phil Woods, Joe Henderson, Jim Hall, Ron Carter, and Jack DeJohnette. Although Jimmy Smith is credited with playing organ on the album some sources claim it was Paul Griffin that was present at the recording sessions. The liner notes to a 2000s CD release indicate that Hancock first recorded his score in London with British musicians, but rejected the results and re-recorded the music in New York with American jazz musicians.