Lady Antebellum and Fleetwood Mac singer Stevie Nicks mixed musical styles for a recent episode of ‘CMT Crossroads' -- and Nicks says one of Hillary Scott's performances was better than she could have done.

The show, which pairs country music artists with performers from other genres, featured the trio and Nicks pair up in a performance of Fleetwood Mac’s ‘Rhiannon.’

“I gave Hillary [Scott] that high part in ‘Rhiannon’ because I don’t sing it that way on stage -- because I can’t reach that note,” Nicks tells The Hollywood Reporter. “I reached it once: the day we recorded the song in 1977. I thought, you know what, if we’re gonna do this, wouldn’t it be great to actually have her sing the real melody of ‘Rhiannon.’ Because it has not been sung since it was written!”

The hour-long episode, ‘CMT Crossroads: Lady Antebellum and Stevie Nicks,’ premiered on Sept. 13. In addition to ‘Rhiannon,’ the group performed Lady Antebellum’s ‘Need You Know,’ ‘Love Don’t Live Here’ and ‘Golden,’ along with Nicks’ hits ‘Landslide,’ ‘Edge of Seventeen’ and ‘Stop Draggin’ My Heart Around.’

More footage from the episode is available here.