Green Leaf Society will play Irish music in celebration of St. Patrick’s Day at 6:30 p.m. on Saturday, March 21, at Flat Iron Crossroads, 7709 Flat Iron Road, Gloucester. Doors open at 5:30 p.m. with Old City BBQ food truck and wine, beer, and soft drinks at the FIX Bar. Tickets are $20 in advance at flatironcrossroads.com or $25 at the door. Children 12 and under attend free of charge. A collaborative musical ensemble, Green Leaf Society celebrates the deep musical tradition of Ireland, performing Irish pub sing-alongs, songs by such famous Irish bands as the Pogues, The Dubliners, Planxty, and others. The band was originally formed for a German tour in 2017 and has since grown into an outlet for many different musical adventures, said a press release. Performing for this particular show will be founding member Derek Kretzer and bassist Kevin Johnson, both of The Plate Scrapers, as well as their longtime musical comrades and Irish specialists Ben Denny and Will Spaulding of The Woodsh...