Stevie Nicks, Train singer Pat Monahan and OneRepublic's Ryan Tedder have signed to duet with 'The Voice' finalists during NBC's big finale.

Miranda Lambert, wife of 'Voice' coach Blake Shelton, was previously announced as a performer.

According to the Hollywood Reporter, Nicks will team with Javier Colon, Monahan will sing with Vicci Martinez and Tedder will duet with Beverly McClellan on the finale (Wed., 8PM on NBC).

NBC has tapped 'American Idol' veteran and upcoming Peacock star Katharine McPhee to preview the new midseason Broadway-themed musical drama 'Smash' during Tuesday night's part one of the finale. Find out what we thought of 'Smash' here.

'The Voice' finalists will be going on tour following Wednesday's finale sans their coaches. The summer tour will feature the show's final eight contestants: Beverly McClellan, Vicci Martinez, Dia Frampton, Javier Colon, Nakia, Xenia, Casey Weston and Frenchie Davis.

Tell us: Who do you think will win 'The Voice'?