Not counting grade school and college, here's a list of all the bands I've been in over the years. It seemed liked more than that, but I think that's just because of the number of musicians that churned through some of these.
(some pictures, audio and just a little history on each)
1976 - Laverne & The Starlites
1978 - Don White & Southern Freedom
1979 - Stoney Ridge
1982 - Metro
1983 - Exit 18
1986 - Psychic Surgery
1988 - Psychic Surgery (part II)
1991 - Watching The Detectives
1966 - Played trumpet from fourth grade through college.
1975 - Started playing acoustic guitar in college (didn't we all?)
1976 - Started playing bass with Lavergne & The Starlites.
2013 - Started playing lead guitar (to be more self sufficient).