Over the years, Tower of Power's rip-roaring horns have enlivened a host of recordings from artists as diverse as Elton John, Grateful Dead, Poison, Neil Diamond, Santana, and Aerosmith, but the group also has had a long career as one of the most smoking outfits in R&B. Now, Bump City and Tower of Power, the group's first two Warner Bros. Records releases, have been collected as one expanded 2-CD set from SoulMusic Records and Cherry Red. 1972's Bump City marked the Warner debut of the