Richie Unterberger of AllMusic gave the album 3.5 stars out of 5 and called it "one of Nina Simone's more subdued mid-'60s LPs, putting the emphasis on her piano rather than band arrangements."[5] He added, "By far the most impressive track is her frantic ten-minute rendition of the traditional 'Sinnerman,' an explosive tour de force that dwarfs everything else on the album."[5]
Joe Muggs of Noisey said, "This is the blues as both urban and urbane, delivered with full knowledge of and passion for its history, and with all the guts and power that white rockers could ever muster, but with all the finesse, sophistication and abstraction that her Juilliard classical training could bring to bear on it."[9]
In 2008, Cokemachineglow included it on the "30 'Other' Albums of the 1960s" list.[10] In 2012, Alicia Keys included it on her "25 Favorite Albums" list.[11] In 2017, Pitchfork placed it at number 21 on the "200 Best Albums of the 1960s" list.[12]