Dal Niente percussionist Gregory Beyer and flutist Emma Hospelhorn pair up to offer an exciting program of solos and duos, featuring the world premiere of “Dream Machines” by David Clay Mettens and a performance of “Witness Tree,” a new marimba solo by Pulitzer-Prize winning composer Melinda Wagner. The program will also include music by David Lang, Sungji Hong, and Füsun Köksal.