Details: ENERGY grafts a variety of sounds - R&B, pop, African and more - to Fourplay's unwavering jazz foundations. In addition to vocals by East - a charter member since the band's inception in 1990- the album also features a vocal track by Esperanza Spalding, the upright bassist, composer and vocalist who has recently taken the jazz world by storm with her self-titled recording debut earlier this year on Heads Up.