This name is referred to several bands: 1) A British Jazz/Progressive Rock fusion band from The Seventies. Formed in 1969 by Dave Quincy (saxophone, flute), Dick Morrissey (saxophones) and Terry Smith (Guitar). With J.W. Hodgkinson on Vocals and Dennis Richardson on Drums, (later to join Foreigner).
The band made a number of fine fusion albums before folding in the mid seventies. Not to be confused with the later nineties Dutch Techo Band I-F.

Read more about If on Last.fm.