Tower of Power's Great American Soulbook album, which features covers of classic soul songs has entered Billboard's Contemporary Jazz Charts at Number 3. It is the highest placing debut album of the week. The album has also entered the Soundscan Jazz charts for record sales at Number 6.

Great American Soulbook features guest vocalists. Sir Tom Jones duets on Sam and Dave's “I Thank You." Joss Stone shares two songs and Tammi Terrel and Marvin Gaye's “(Heaven Must Have Sent) Your Precious Love" and Marvin Gaye and Kim Weston's “It Takes Two." Sam Moore joins the group on Otis Redding's “Mr. Pitiful," and Huey Lewis shares vocals on Wilson Pickett's “634-5789” The album also features a 4-song “James Brown medley, and songs originally performed by Stevie Wonder, Bill Withers, Aretha Franklin, Tavares, Watts 103rd St Rhythm Band, and Billy Paul.