Listen to a new MGMT song, “Alien Days” (playing Firefly Festival in June) April 20th, 2013 | 5:42PM | By Bruce Warren MGMT released a new song, “Alien Days,” on cassette today for Record Store Day. Stream it below. The band plays the Firefly Festival the weekend of June 20-21st in Dover, Delaware. Comments comments Categorized Under: AUDIO Tags: Firefly Festival, MGMT Leave a Reply Click here to cancel reply. You must be logged in to post a comment.