Infinitely adaptable, DeMerle's power and rhythmic elasticity underlines his bold presence and command of modern jazz drumming. By the time of 'Spectrum,' Les DeMerle's dynamic 1969 United Artists debut album, Les was a known, prodigious young drumming talent who had been wowing audiences through club and TV performances since he was a teen. The unheard gems was a recorded in 1967 by his band, Sound 67, which was lost in the confusing era at Atlantic Records, never to see the light of day. The a…