Complex sentence: This summer, the Swellers played the Vans Warped Tour for the second time, playing on the Ernie Ball Stage from June 25,2010 to July 17,2010.
Split into simpler sentences: This summer, the Swellers will be playing the Vans Warped Tour for the second time. They will be playing on the Ernie Ball Stage from June 25,2010 to July 17,2010.