The Philadelphia new-music producer Bowerbird has planned a set of seven concerts, each timed for 10:00 or 11:00 pm, that aim to put listeners in that odd space between sleep and wakefulness — thus the series title, Liminal States. Says pianist Marilyn Nonken, who opens the set next Wednesday with Morton Feldman’s Triadic Memories, “Everybody is so traumatized and beat up that if a concert involves another state of awareness, that’s a very attractive prospect. … It’s a physically different place … where your brain waves change.” – The Philadelphia Inquirer