Reading Symphony Orchestra
- Includes concert calendar, activities including youth orchestra, program archive, sound samples, and ticket sales information.
- http://www.readingsymphony.com

Peter Nero and the Philly Pops
- Includes ticket information, schedules and contact details.
- http://www.phillypops.com/

Harrisburg Symphony Orchestra
- Includes schedule and location of performances and ticket information.
- http://www.harrisburgsymphony.org/

Philadelphia Classical Symphony
- Professional period instrument orchestra committed to attracting new and diverse audiences: includes concert schedule and ticket prices.
- http://www.classicalsymphony.org/

Delaware Valley Philharmonic Orchestra
- Includes season schedule, tickets, news, and special events.
- http://www.dvpo.org/

Pittsburgh Symphony Orchestra
- PSO and Heinz Hall calendar, ticket information, biographies of musicians.
- http://www.pittsburghsymphony.org/

Philadelphia Orchestra
- Includes schedule and ticket information.
- http://www.philorch.org/

Northeastern Pennsylvania Philharmonic
- Located in the Poconos. Concert and educational program calendars, ticket purchase information, volunteer information.
- http://www.nepaphil.org/

Allentown Symphony Orchestra
- Includes schedule and news.
- http://www.allentownsymphony.org/

Lansdowne Symphony Orchestra
- Concert schedule and general information concerning one of the oldest regional ensembles serving the Greater Philadelphia area.
- http://www.lansdowneso.org/