Free Energy brought their straightforward, catchy rock music to amp up the crowd at Rolling Stone's Rock Room. The band tore through their eponymous battle cry, "Free Energy," a song off of 2010's Stuck On Nothing, a track that opens with a cowbell and doesn't let up.
Check out Free Energy's show above.
This article originally appeared on Rolling Stone: SXSW 2013: Free Energy's Rallying Cry



