gary koss brought us this report on tower of power. >> ♪ >> reporter: it's a friday afternoon and towerwer is doing a sound check to get ready for a concert tonight. what they're actually doing is trying to get themselves just right. they are a little out of sync. >> we were all on that note? >> yeah,. >> unacceptable. >> reporter: 43-year-old emilio castillo started this band, they were called the motowns then. a horn player in berkeley called steve hokla happened to hear them one night. >> they just knocked me out. they played can't turn you lose and all these songs i have. and i remember going after and saying, you have a great band. and i said there's only one problem. you have to problem on your base. and i told him by the way i play bass and he had me go in and been playing with them since 1968. >> reporter: since then, emilio has been giving the songs a tune. >> if i could play the topples nightclubs in sacramento i would have hit the big time. >> ♪ >> so i just said, emilio we ought to right our own stuff. and we did. one of the first we wrote was still young man. that song is 4