Get Ready for 'Something' Big: Billie Eilish Covering The Beatles

"Everything about every song is very different but somehow cohesive, and I think that was kind of the same with the last album," Eilish said in a preview clip from SiriusXM's Twitter. She also discussed the overwhelming effects of being young in the music industry and how the internet doesn't care about "the undeveloped brain," which Finneas teased should be the name of her sophomore set.

The hitmaking brother-sister duo previously covered The Beatles when performing a stripped-down rendition of "Yesterday" for the in memoriam tribute at the 2020 Oscars back in February. She performed "I Will" by The Beatles on the ukulele, the first song she ever learned to play on the instrument, during her "Carpool Karaoke" session on The Late Late Show With James Corden last year.

Eilish's performance and interview will air on SiriusXM's Alt Nation channel Thursday, Dec. 3 at 5 p.m. ET and PT via SiriusXM radios (channel 36) and on the SiriusXM app. The session will rebroadcast throughout the weekend exclusively on  On Demand on the SiriusXM app.

Catch a sneak peek of Eilish and Finneas' interview below.