Olivier Messiaen once said that all you need to make music is a note and silence. For the composer Arash Yazdani, born in 1985 and raised in Isfahan, Iran (and now based in Tallinn, Estonia), a slightly adapted adage applies: All you need to make music is two frequencies – though Yazdani has a clear preference for notes extremely close in pitch. His music is full of tightly coiled beatings, both stationary and set in motion. These beatings function like black holes in his works, drawing other sounds inexorably into their orbit. (Jeffrey Arlo Brown)