While I'm dreading Summer's slow demise, there is one thing that lifts my spirits, and it's a stellar music lineup. Starting with a jam-packed concert-filled Labor Day weekend, September holds much musical promise. From a three-day electronica fest on Randall's Island Park to a Bowery Ballroom set from up-and-coming Danish female artist Oh Land, the month overfloweth with awesome bands, eclectic sounds, and at least two more outdoor concerts to fulfill our respective warm-weather activity quotas. Here are nine concerts you shouldn't miss in September — have one to add? Leave a comment below!