Detailed listings for nearly 200 concerts, festivals, open mics, jam sessions and musical workshops slated to take place during July and August in Brooklyn, Queens, Nassau and Suffolk counties appear in this installment of AcousticMusicScene.com’s Long Island AcoustiCalendar. AcousticMusicScene.com is pleased to be hosting unplugged showcases featuring artists from LI and the Hudson Valley area during the Huntington Folk Festival at Heckscher Park on Saturday afternoon, August 1, as well as late-night song swaps featuring artists from New York and beyond during the Falcon Ridge Folk Festival, July 23-26, on Dodds Farm in Hillsdale, New York. [To view the entire calendar, click on the headline.] Editor's Note: Links to Websites covering other parts of the New York metropolitan area, the Northeast...