Justin Bieber Justin Bieber

Justin Bieber took home several American Music Awards, while more than a dozen artists performed live — including, for the first time together, New Kids on the Block and Backstreet Boys.

Photos: AMAs red carpet arrivals

Among Bieber's prizes Sunday night was artist of the year. He beat mentor Usher and became the award's youngest recipient. The 16-year-old heartthrob also walked away with the favorite male artist and breakthrough artist awards.

Other notable wins went to Brad Paisley and Taylor Swift for favorite male and female country artists, respectively, and Usher who nabbed best soul/R&B male artist and album.

While the show was filled with a bevy of live performances from artists including Miley Cyrus, Rihanna, Bon Jovi and Ke$ha, the most anticipated of the evening was that of the old boy bands. The two groups (which will be going on tour soon) closed the night with a vocal mash-up of each group's greatest hits and fancy choreography that had the audience on its feet singing and dancing along.

Watch the performance below.

Check out the list of winners:

Pop or Rock Music
Favorite Male Artist: Justin Bieber

Favorite Band, Duo or Group: The Black Eyed Peas

Favorite Female Artist - Lady Gaga

Favorite Album - Justin Bieber, My World 2.0

Country Music
Favorite Male Artist: Brad Paisley

Favorite Female Artist: Taylor Swift

Favorite Band, Duo or Group: Lady Antebellum

Favorite Album - Carrie Underwood, Play On

Soul/Rhythm & Blues Music
Favorite Male Artist: Usher

Favorite Female Artist: Rihanna

Favorite Album: Usher, Raymond v. Raymond

Rap/Hip-Hop Music
Favorite Male Artist - Eminem

Favorite Album - Eminem, Recovery

Alternative Rock Music
Favorite Artist: Muse

Adult Contemporary Music
Favorite Artist: Michael Buble

Latin Music
Favorite Artist: Shakira

Contemporary Inspirational
Favorite Artist - MercyMe

Artist of the Year
Justin Bieber

Breakthrough Artist
Justin Bieber