Listen to A.D. Rountree weeknights from 7 p.m. to midnight for your chance to win Aftershock tickets!
A nightly code word will get announced every hour. Just text it in to enter to win.
93.7 The River welcomes the Aftershock Music Festival - coming to Discovery Park in Sacramento October 13 and 14.
System of a Down, Deftones, Alice in Chains, Incubus, Godsmack, Shinedown, 311 and Slash are scheduled to perform.
Don't want to chance missing the show? Purchase tickets now through the Aftershock website.