The Amsterjam artist roster has now doubled. The event which will take place in Holland on March 20-22 of next year, will feature performances by The Disco Biscuits and Keller Williams in addition to Umphrey’s McGee and Particle. Each group will perform on all three nights at the Melkweg in one of the venue’s two concert spaces. Amsterdam is home to the Stedeljk Museum of Modern Art, Beginjnhof (‘an oasis of peace’) and Magere Brug (‘the citys most famous and oldest pedestrian, hand-operated drawbridges’) but as the festival emphasizes on its web site, ‘Be part of the first event of its KIND,’ which for many, says it all (in CAPS).