Yesterday's battle of country music superstars made for the most contested Showdown in months, as fans of Carrie Underwood and Jason Aldean squared off to fight for their songs. In the end, Underwood's 'Two Black Cadillacs' was declared the winner. Today and tonight on Taste of Country Nights radio the dark country rocker will face yet another superstar. 

The title track to Toby Keith's new 'Hope on the Rocks' album is the story of the wayward souls who take solace in a strong drink and the good conversation between friends at the local bar. The single is his second from the album. Keith will need all of his fans to come together to vote early and often in this battle of CMT Artists of the Year.

Listen to clips of both Underwood's and Keith's songs and vote for your favorite here. You can vote once every hour online, so come back and vote often to be sure your artist wins. Hear the full versions of the songs tonight after 10PM on Taste of Country Nights. Help your favorite song win by placing additional votes at (888) 678-9995. Call as many times as you like! You can listen to the show online through any of the 41 radio stations that carry it. Voting will end tonight at 10:40PM CT.

Listen to a Sample of Carrie Underwood, 'Two Black Cadillacs'

Listen to a Sample of Toby Keith, 'Hope on the Rocks'

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Showdown Rules: The song with the most votes wins, and the winner goes on to face a new challenger in the next Showdown. Vote as much as once per hour online, and as much as you want by calling (888) 678-9995. If a song wins five days in a row, it will be retired into the Taste of Country Showdown Hall of Fame to allow for new songs to compete. Some songs will be considered for a second Showdown if voter turnout is healthy in a losing effort.