SOSNA Grays Ferry Triangles Summer concert series, as a duo with Stuart Markus. FREE Near 2223 Grays Ferry Ave, Philadelphia, PA 19146 ( by the Igloo or Graces Streetery) Bring a chair. Park at your own risk. There's paid parking on South Street, two hr free parking on most streets and free parking down Grays Ferry and 23rd St. Please read the parking signs and/or ask a local for help! Weather permitting https://www.sosnaphilly.org/music-in-the-triangle