In 1956 
Jackie McLean was only beginning to assert himself as a true individualist on the alto saxophone, exploring the lime-flavored microtones of his instrument that purists or the misinformed perceived as being off-key or out of tune. 
4, 5 and 6 presents 
McLean's quartet on half the date, and tunes with an expanded quintet, and one sextet track -- thus the title. 
Mal Waldron, himself an unconventional pianist willing to explore different sizings and shadings of progressive jazz, is a wonderful complement for 
McLean's notions, with bassist 
Doug Watkins and drummer 
Art Taylor the impervious team everyone wanted for his rhythm section at the time. The quartet versions of "Sentimental Journey," "Why Was I Born?," and "When I Fall in Love" range from totally bluesy, to hard bop ribald, to pensive and hopeful, respectively. These are three great examples of 
McLean attempting to make the tunes his own, adding a flattened, self-effaced, almost grainy-faced texture to the music without concern for the perfectness of the melody. 
Donald Byrd joins the fray on his easygoing bopper "Contour," where complex is made simple and enjoyable, while 
Hank Mobley puts his tenor sax to the test on the lone and lengthy sextet track, a rousing version of 
Charlie Parker's risk-laden "Confirmation." It's 
Waldron's haunting ballad "Abstraction," with 
Byrd and 
McLean's quick replies, faint and dour, that somewhat illuminates the darker side. As a stand-alone recording, 
4, 5 and 6 does not break barriers, but does foreshadow the future of 
McLean as an innovative musician in an all-too-purist mainstream jazz world. [An 
RVG remastered edition of 
4, 5 and 6 was issued in 2007.] ~ Michael G. Nastos