Erin Freeman & Janz Castelo re: War and Peace: A Concert for Hope

It's a matter of physics, says violist Janz Castelo, the Artistic Director of the Buffalo Chamber Players.  It's all about listening, says Erin Freeman, Music Director of the Buffalo Philharmonic Chorus.  Both organizations team up for "War and Peace: A Concert for Hope" at Westminster Presbyterian Church Friday, April 11th at 8pm.  Janz and Erin tell WNED's Peter Hall how different performing groups can work together.