Dig out your Doc Martens and flannel shirts for a 90s flashback at this weekend’s Jam On Walnut. The second in a series of three block-party concerts this summer, Saturday’s show will feature local indie-rock band Donora followed by the Gin Blossums. The show starts at 7pm and will wrap up around 11pm. The stage will be outside Doc’s (intersection of Bellefonte and Walnut Streets) in Shadyside. Wristbands are $2 and drink specials include $2.50 Miller Lite and $3.50 Heineken during Happy Hour (7-8:30pm), $3.50 Miller Lite and $4.50 Heineken later in the evening (8:30-11pm). All proceeds benefit the Cystic… Read the rest