Kristin Chenoweth and her impressive pipes returned to "Glee" last night -- where she joined the cast for their stellar all Fleetwood Mac episode.

In the ep, which included only songs from the group's "Rumours" album, Chenoweth's April Rhodes comes back to McKinley High to get Mr. Schuester to help her write a Broadway show -- and the two eventually sing a duet to Fleetwood's "Dreams." Watch it below:

While this isn't the first time the show has focused on one artist for an episode (See Britney Spears and Madonna), it is the first time they've done only songs from one album.

Looks like being on the show will do wonders for the original "Rumours" album -- which, at the moment this story is being written, has jumped all the way up to #4 on the iTunes chart.

Never underestimate the power of "Glee."

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