Old school met new school at the 2014 ACM Awards when country superstars Lady Antebellum joined forces with music legend Stevie Nicks for an outstanding performance.

The four musicians began on stage together in the midst of the crowd for a stripped-down performance of their duet, 'Golden.' Charles Kelley began the performance with a beautiful solo vocal, and then Nicks took the mic to excited applause from the audience. All four joined in on the chorus, creating the signature harmonies Lady A is known for, as Hillary Scott provided a moving lead vocal.

The performance then shifted to the iconic intro guitar riff of the Fleetwood Mac hit 'Rhiannon' -- to which the crowd erupted in cheers. Nicks' and Scott's voices blended perfectly on the classic tune, and the Lady A sound complemented the song almost as if it were intended to be performed that way.

The bands originally performed together as a part of CMT's Crossroads and created a pairing fans can't resist. 'Golden,' including Nicks' featured vocals, is available for download on iTunes.

Watch Lady Antebellum and Stevie Nicks Perform 'Golden'