Algernon Cadwallader rock the riverfront this afternoon at Morgan’s Pier for the lastest show in R5 Production’s free concert series. The Philly emo/punk rock outfit are gearing up for a New England and Midwest tour in August, and will take the stage today after Ohio rockers En Garde. The show is 21+ and free, with doors at 5pm and the show at 6:30. Go here to listen to “Springing Leaks” from the band’s last release, Parrot Flies.