Keyboardist and composer Weldon Irvine is among the most celebrated Jazz-Funk artists of all time. A longtime bandleader for Nina Simone, he wrote the lyrics for Simone's iconic civil rights anthem "To Be Young, Gifted and Black". Throughout the 1970s, Irvine released a series of seminal albums full of deep, soulful, funky grooves, many of which were later mined for samples. The Sisters is a collection of lost tracks and demos from his late-1970s studio sessions with fellow Jazz-Funk luminary Don Blackman. A potent mix of instrumental and vocal tracks from a remarkably consistent artist, The Sisters contains the hit single "Morning Sunrise", famously sampled on Jay-Z's "Dear Summer".