Float Fest has announced its 2015 lineup which will include Ghostland Observatory, Phantogram, Mute Math, Max Frost, and Dr. Dog. The festival takes concertgoers tubing down the San Marcos River in San Marcos, Texas and drops them off at Cool River Ranch for a full day of music. The festival runs from August 29th-30th, with single day passes ranging from $50-$70, and VIP passes running from $12-$150. Tickets go on sale today at the festival’s website.