Adele received multiple nominations. So did artists like Bon Iver, Bruno Mars and Mumford and Sons.

Overall, the nominees announced during CBS’s Grammy nominations concert Wednesday night were largely expected. (One slightly unexpected moment: the fact that Nicki Minaj’s name was misspelled on the big stage piece that touted her nomination for best new artist. Seriously, check this video at the :42 mark.)

View Photo Gallery: The Recording Academy’s nominations concert in Los Angeles.

More exciting, perhaps, were the performances during the hour-long primetime Grammy Awards special, which allowed multiple artists to band together in the spirit of awards show promotion. Which, as we all know, is what great music is all about.

Hereare four of the most notable collaborations from the Grammy nominations show.

More Grammy coverage:

Key nominations for the 54th Grammy Awards

Lady Gaga and Sugarland

Gaga, who had apparently wrapped herself up in a bow for the holiday season, and the country duo came together to perform “You and I,” turning up the underlying twang on the Gaga-meets-Jo Calderone hit. The newly wed Jennifer Nettles seemed to be particularly enjoying herself during this one, which served as the program’s grand finale.

Jason Aldean and Ludacris

The country star and rapper have teamed up before to perform “Dirt Road Anthem” on television. That still didn’t make it less weird to see Luda rapping country-style and strumming country riffs on a guitar.

Grandmaster Flash, Mellie Mel, Scorpio, Common, Lupe Fiasco and LL Cool J

“The Message” came through loud and clear on this one. Also enjoyable: watching the white dudes in the front row freak out to this old-school classic.

Usher, Valerie Simpson and Mike Stoller

In the most touching team-up of the night, Usher crooned “You’re All I Need to Get By” alongside Ashford and “Stand by Me”with Stoller as a tribute to their respective songwriting partners — Nick Ashford and Jerry Lieber — who died this year.

Did you have a favorite performance? A nomination you were particularly excited to see? Or do you just want to vent about the Recording Academy’s inability to spell Nicki Minaj? Post a comment to share your thoughts on any and all of these subjects.

More on the 2012 Grammy nominees:

Nominations for the 54th annual Grammy Awards in top categories

British singer Adele collects Grammy nominations for record and song of the year, 4 others

Kanye is Grammy nominations leader with 7; Adele, Bruno Mars, Foos tie for 6 each