Tower of Power founding members Emilio Castillo and Doc Kupka, along with new singer Marcus Scott, called in to talk about their fall tour and new album Soul Side of Town, which recently hit #1 on the Billboard Jazz charts. Topics: writing and recording new material, finding new ways to approach songs and instruments, and touring in 2018 vs. 1968. Plus: what it takes to get the Tower of Power horns to play on your record.