Country duo Sugarland got by with a little help from their friend and tourmate Sara Bareilles at their show at the Greek Theater in Los Angeles last week. The pop singer came onstage to help Jennifer Nettles and Kristian Bush cover the upbeat '80s hit, 'Come On Eileen.'

The choice of a cover song in the live setting is always an artful one, and Sugarland selected a high-octane, feel-good song that invited plenty of singing from the crowd. In essence, they chose wisely.

Nettles and Bareilles linked arms and ran in a circle for some twangy guitar and hoe-down style dancing, to give the Dexy's Midnight Runners song a country makeover. Bareilles' pretty pop vocals added that extra oomph and layer of harmony. It looked like a party was unfolding on stage and in the crowd, and the song further enhanced an already good time on the left coast.

Wearing a summer-ready black slip dress outfitted with hanging pink, blue, orange fringe tassels, the always expressive Nettles was born to perform. She always dances like no one is watching, and if they are, she certainly gives them a show. Bareilles, in her blue dress, rocked it with equal flair. She and Nettles should consider doing a recorded duet, since their on-stage chemistry sparked something so exciting to watch. It was a near-perfect fusion of pop and country!

Watch Sugarland Cover 'Come on Eileen' with Sara Bareilles