Sorcery is the debut solo release from Idris Muhammad, a New Orleans-bred rhythm king who successfully made the leap from the finest soulful jazz records of the ’60s to the nastiest fusion funk of the ’70s. Here we catch him literally on the cusp of the two in 1970, with one good foot in the get-down of “Express Yourself” and “Super Bad,” and the other in his own heady excursions into modal rhythm and melody.