However, the rest of the names on the Jingle Ball slate may not be as familiar, even though the music probably is.
Here's a handy guide to who's who:
WHO? The 15-year-old Canadian singer discovered on YouTube and now handled by Usher
HITS The hip-hop-tinged "One Time" and the ballad "One Less Lonely Girl"
BOYS LIKE GIRLS
HITS The alternative-pop-tinged "The Great Escape" and the fizzy pop of "Love Drunk"
WHO? Owatonna, Minn., native singer-songwriter Adam Young
HIT The sweet-synth No. 1 ballad "Fireflies"
BEST KNOWN FOR The ongoing controversy of how close he sounds to the Postal Service, though that should die down once more of his major-label debut, "Ocean Eyes," gets out
Lil Wayne's Cash Money Records
HITS The smooth Europop smash "Down" and "Do You Remember"
BEST KNOWN FOR His song "Down" ended the Black Eyed Peas' record-setting 26-week run at the top of the singles charts
WHAT Z100's Jingle Ball
WHEN | WHERE 7:30 p.m. Friday, Madison Square Garden, Manhattan
INFO $51-351; 631-888-9000, ticketmaster.com
Preshow, "Z100's All Access Lounge,"
Even if you get shut out of the main event, you can get to see some of the evening's stars at the preshow, "Z100's All Access Lounge," at Hammerstein Ballroom, 311 W. 34th St., Manhattan, from noon to 6 p.m. Friday. The event is free.
1 p.m. Ke$ha, the singer behind "Tik Tok," performs. (Meet, 1:30 p.m.)
2 p.m. Meet Miranda Cosgrove from "iCarly"
3 p.m. Jay Sean performs. (Meet, 3:30 p.m.)
3 p.m. Meet Orianthi, best known as Michael Jackson's guitarist. (Performance at 4 p.m.)
4 p.m. Meet Justin Bieber. (Performance at 5 p.m. Please don't riot.)
5 p.m. Meet Leighton Meester of "Gossip Girl" and "Good Girls Go Bad" fame.