Before Mike joined the Electric Prunes at the tailend of 1967, he was in a band called the Nomads with drummer Joe Dooley who was to join the Prunes in early 1968 on Mike's recommendation.
Very little is known about Mike Gannon's time in The Electric Prunes, so I asked Mark Tulin a little bit of information about him and this is his response :
As far as Mike Gannon goes, Mike was brought into the band a little before the European tour. As I remember it, he was not going to participate in any royalities, but for all other intents and puposes, he was thought of as a full member. His guitar playing style added a new dimension to our material, some of which is heard on the European Tour album.
Mike and Ken did a fair amout of harmony/double lead work and it seemed a great fit. He also helped in person on some background vocals.
After leaving the Prunes, Mike formed a band called Babyfood. Mike was on vocals and guitar with Joe Dooley on drums and John Miller on bass. Mike had played with Joe and John in the Nomads. Babyfood did manage to record a few songs which included 'They Don't Mind It' and 'Funny Caroline' with James Lowe involved in the engineering and production of the recordings.
Mike had to join the navy in the latter part of 1969 which saw the end of Babyfood. Unfortunately, Mike died in Hawaii while on R&R after a tour of duty in Vietnam in the early 70s.The European Tour album is dedicated to him.