Since releasing 
Shaw-Neeq, his seminal 1971 Black Jazz debut album while still a member of 
Ray Charles' band, guitarist 
Calvin Keys has recorded only sporadically. In 1975 he issued an extremely worthy Black Jazz follow-up titled 
Proceed with Caution!, but joined 
Ahmad Jamal's group and didn't record as a leader until the mid-'80s. He signed with the venerable indie Wide Hive in 2000, issuing the crucial acid jazz classic Detours into Unconscious Rhythms. 
Blue Keys marks only his fourth outing for the label.
This nine-track set is performed by a star-studded cast that includes 
Gary Bartz on alto sax, 
Steve Turre on trombone and shells, 
Babatunde Lea on percussion, bassists 
Henry Franklin and Scott Brown, saxophonist Doug Rowan, drummers Thomas McRee and Mike Hughes, pianist/keyboardist 
Mike Rinta, organist Mike Blankenship, and pianist/producer 
Gregory Howe. 
Set opener "Peregrine's Dive" juxtaposes jaunty post-bop, Latin rhythms, and elegant funk. Introduced by a minor modal piano, a sprightly jazzy guitar run, and 
Bartz's moaning alto, 
Turre's trombone enters atop a shuffling, breaking drum kit and double bass. 
Bartz solos first, weaving sumptuous lines around the band before 
Turre enters, pushing the crew with a rhythmic approach. 
Keys adds expansive vamps in direct interplay with trombone and drums. His solo weds complex, rhythmic chord voicings and fluid, edgy single-note runs. The jam ultimately swirls together, moving frenetically yet steadily. It's almost danceable. "CK 22" is introduced by a fingerpopping bass riff before keys and trombone decompress them with open modal circularity; playing both trombone and conch shells, 
Turre offers harmonic support while 
Keys delivers a deep blue solo. Speaking of blues, "At Arrival"  showcases 
Keys' canny playing, atop a walking double bass, congas, and drums, while "Making Rain" is a funkier look at jazz-blues à la 
Phil Upchurch and 
T-Bone Walker. "Six to Seven" explores dub reggae, post-bop, blues, and funk. 
Keys' five-note theme is buoyed by brass and reeds atop bumping congas, taut basslines, and percussive syncopation. His guitar winds complex scales yet never abandons the groove. A much edgier blues appears in the title track. Initially, 
Keys revisits his journey with the 
Charles band, melding leads, chords, and vamps with a piano accent and swinging Chicago-style horns. Closer "BK 18" is the genuine jazz-funk article. A horn section vamp is urged by the drum kit to set up a frame for 
Keys, who makes use of 
Bob Marley's Get Up, Stand Up" in the lyric riff. Rhythmically inventive, 
Keys solos directly at them before letting the horn section exercise a lyric, harmonic motif that hovers between 
Fela Kuti and 
James Brown. The middle-eight breaks the jam open as horns, breaking drums, hypnotic bass, and a meandering keyboard line flow around and through his playing. Following 
Keys serpentine, cut-to-the-bone solo,  the tune concludes with spacy dubwise effects and brassy authority. Though recorded eight years later, 
Blue Keys picks up where 
Electric Keys left off yet is more musically advanced and groove-centric. This is powerful stuff. ~! Thom Jurek