Russel Walder came to renown in the 1980s as half of a Windham Hill Duo with Ira Stein. But his new music is more electronic and less pastoral, a tribal sound for the global village.
Tangerine Dream returns to Philadelphia after 11 years with a sound that calls to the past for the sound of the future moving from Phaedra to Raum. John Diliberto reviews their concert.