Live awards shows are always a breeding ground for mashups. On Tuesday's (Dec. 10) American Country Awards, Darius Rucker shared the stage with Sheryl Crow for a three-song mashup and medley.

Rucker took the stage first to deliver part of his song 'Radio' before Crow took over, strumming her guitar while belting out her 'Callin' Me When I'm Lonely.' Then, Rucker returned to the stage to kick into his smash 'Wagon Wheel,' with Crow playing her instrument and singing right alongside him.

It was an equal parts Rucker and Crow performance. 'Wagon Wheel' truly comes alive performed with guests.

The camera panned to the crowd, with fans and Lady Antebellum's Charles Kelley singing along (the trio contributed to Rucker's radio cut). If Taylor Swift would have been there --she was MIA since she is on tour in Australia -- she'd have been singing and dancing along, too, since that's her thing at awards shows.

The 2013 ACAs were another smashing success!