Country newcomers the Henningsens may not have as many fans as superstars like Miranda Lambert and Darius Rucker -- yet -- but their faithful followers continue to step up in a big way. Yesterday and last night on Taste of Country Nights radio the trio's single 'American Beautiful' topped Rucker's 'Wagon Wheel.' As they go for a fourth straight win, is it really fair to still call them underdogs?

On Thursday they face an all-star collaboration in 'Bruises,' the work of pop rock group Train and Pistol Annies original Ashley Monroe. The nostalgic country track is as catchy as 'American Beautiful,' but fans of those two artists will need to stand up and be counted at a faster pace than the Henningsens' friends on Facebook.

Listen to clips of both the Henningsens' and Train'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 The Henningsens, 'American Beautiful'

Listen to a Sample of Train (Feat. Ashley Monroe), 'Bruises'

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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.