Here Are The Latest 2015 Grammy Mash-Ups -- Are They What You Expected?

Herbie Hancock and Ed Sheeran are among the signature weird team-ups.

The Grammys have a history of unexpected mash-ups. But the latest list of pairings announced on Wednesday (Feb. 4) will really blow your mind.

We already knew Sam Smith was on the list, but now we can get psyched to see him share the stage with his London Session mate Mary J. Blige. Album of the Year nominee Beck will hook up with Coldplay singer Chris Martin and Ed Sheeran will share the stage with recently reunited 1970s symphonic rock band ELO. Right?

Beck and Chris Martin in 2002

Ed's night sounds like it's gonna be pretty epic, frankly, since he'll also bro down with a trio of special guests including Grammy legend jazz icon Herbie Hancock, John Mayer and Roots drummer Questlove. Sia is also on the list now, so we can't wait to see what she'll hide behind for her debut Grammy performance.

Also added: 20-time Latin Grammy winner Juanes and classical pianist Lang Lang.

They join a packed lineup that already includes: just added Super Bowl halftime crusher Katy Perry, Kayne West playing twice on the telecast, once as a solo artist and again with Rihanna and Sir Paul McCartney, as well as Lady Gaga with Tony Bennett, Common with John Legend, Ariana Grande, Pharrell, Hozier with Annie Lennox, Jessie J with Tom Jones, Adam Levine and Gwen Stefani, Madonna, Usher, AC/DC, Eric Church and Miranda Lambert.