Drawn from two different sessions, the first date produced the gratifying opening track "Soul Surge" and the percolating "Cunga Black" with Hubbard joined by James Spaulding on alto saxophone and flute, Joe Henderson on tenor saxophone, Kiane Zawadi on euphonium, Harold Mabern on piano, Larry Ridley on bass, Clifford Jarvis on drums, and Big Black on congas. A week later Hubbard returned to Van Gelder Studio with Spaulding, Zawadi, and a slightly different line-up including Hank Mobley on tenor saxophone, McCoy Tyner on piano, Bob Cranshaw on bass, and Pete LaRoca on drums. This 2nd session rounded out the album with hard-charging performances of "Outer Forces" and "Jodo," as well as the mesmerizing title track.
Side A
1 Soul Surge
2 Blue Spirits
Side B
1 Outer Forces
2 Cunga Black
3 Jodo