Once upon a time, getting to know Christian Prommer was like finding the thread linking techno and house—both derivatives of disco—to jazz. The latter is a precursor to rhythm and blues, which itself forms the roots of soul music, an influence of disco. Prommer’s critically-acclaimed Drumlesson Vol. 1, which came out in 2008, delighted with its filtering of seminal techno and house tunes through deftly-crafted jazz arrangements. With the employment of real musicians, and the production genius of !K7 founder Peter Kruder, the result oozed polish while sounding as prodigiously improvisational as a terrific slice of live jazz. Prommer’s reworkings of such dance classics as Derrick May’s “Strings of Life” and Daft Punk’s “Around the World” managed to rub listeners the right way with their widespread familiarity while also challenging their preconceptions of the original tracks. But as cerebral as it may have been, Drumlesson Vol. 1 was still firmly in the realm of dance music, its percussive elements as palpable as fireworks.