A co-composition by three leaders of the Bang On A Can scene -- Michael Gordon, David Lang and Julia Wolfe -- this work about the idea of "home" bears many of the collective's touches. Chief among them is the minimalist feel, even though there is plenty of inventive work to be found. "Is the Wind" is driven by a great guitar riff, and also has memorable flute writing. Ensemble Signal was built to play this music (that goes for the guest vocalists, too). And tracks that start off whisper-quiet, like "The Boy Sleeps," can erupt midway through with dizzying energy. Call it a subtle surprise.