The concept seems simple: ask 99 potential collaborators to contribute sounds, with any rhythmic content pinned at 99 bpm. Yet the resultant 3-hour-long opus – meant to be absorbed in one sitting – is anything but straightforward. With The Consuming Flame: Open Exercises in Group Form, Drew Daniel and M.C. Schmidt have produced their most ambitious and eclectic piece of work yet.  Sampling a short list of the pair's collaborators might prepare folks for the wide-ranging and brilliant nature of this magnum opus. Daniel and Schmidt started by enlisting long-time pals such as J Lesser and Wobbly. Widening the circle a bit, they enlisted the skills of electronic contemporaries such as Max Tundra, Mouse on Mars, Rabit and DeForrest Brown, Jr.