Margie Harris brought her 18-month-old granddaughter Miriam to the Bala Cynwyd Library on Monday to hear the orchestra's string quartet.
"It's so beautiful. To see the community, all ages, listening to these fabulous professional musicians. It's incredible."
Philadelphia Orchestra violinist Paul Arnold says he loves their audience appreciation concerts, where they go to different neighborhoods and play for a variety of people.
"Honestly, it's better, because all the stigma of the concert hall setting is dispensed with, and it's really one to one. We open the floor to questions," Arnold said.
He says these shows help them reach an audience who otherwise may not have listened to them.
"People don't have this sense of 'How do they do that?' or 'I'm so uncomfortable, get me out of here.' This is the way it should be. This is the way it was done, historically," he said.
Monday's audience appreciation concerts feature more than 32 pop-up ensemble concert in venues around the city.