After signing a recording contract in light of his growing popularity on YouTube, Bieber worked with collaborators including his mentor Usher, and producers Tricky Stewart, The-Dream, and MIDI Mafia.

With My World peaking at number five on the chart that week, Bieber became the first artist to occupy two top-five positions on the ranking since Nelly in 2004.

"[6] In a piece with The New York Times Bieber stated that most of the production took place in Atlanta, and confirmed collaborating again with Tricky Stewart and The-Dream.

"[7] Sara Anderson of AOL Music commented that "his sophomore release also showcases pop-y and hip-hop fused tracks".

"[9] The album's lead single, "Baby", coined by Rolling Stone as a "consciously crafted throwback" draws from fifties music and doo-wop while incorporating a hip-hop influence.

[9] Jon Caramanica of The New York Times said "Runaway Love" was a "winning amalgam" of New Edition and Depeche Mode's "Policy of Truth.

"[17][18] Andy Kellman of Allmusic commented that the album's ballads could be considered adult contemporary "if the singer happened to be of age".

[9] The previous has been noted to have distinct similarities to Chris Brown's "Forever", while the latter makes references to doomed couples such as Romeo & Juliet, Bonnie & Clyde and Sonny & Cher.

"[9][14] A Wal-Mart bonus track, "Where Are You Now", an extension of sorts of My World's "Down To Earth", focuses on Bieber's feelings after his parents' splitting up.

[24] Bieber followed up the album with performances at the 2010 Kids' Choice Awards on March 27, 2010, and as the musical guest on Saturday Night Live in April.

"Baby" featuring Ludacris, was released as the album's lead single on January 18, 2010, and it went on to impact the mainstream and rhythmic radio formats.

The song held Bieber's highest peaks at the time, reaching number three and five, respectively in Canada and the United States, and charted in the top ten of five other countries.

He also complimented the dance-pop songs, calling them, "light on the ears yet memorable; and that "the unrequited material sounds deeply felt; the ballads have all the necessary us-against-the-world teen-love dramatics.

"[11] Leah Greenblatt of Entertainment Weekly gave the album a B rating, stating that it "won't likely affect any adults, not in the direct blast radius of Bieber's target range", however, she praised how many tracks reminded her "the sanitized R&B swagger of early-days Usher and Justin Timberlake", along with commending the song "U Smile" as a "shimmery slice of Hall & Oates-style blue-eyed souland", and finally stating "there's a real talent, it seems, under all that hair.

"[18] However, Sputnikmusic's Rudy Klapper found that his producers "do him little favors" and commented on its substance, "Nearly every song requires some sort of suspension of belief thanks to the lyrics, but if one ignores just what bull*** Bieber is spewing at any given time, My World 2.0 reveals itself as a largely unobjectionable slice of harmless pop music.

"[30] Luke O'Neil of The Boston Globe criticized the music's "recycling" of different styles and wrote in conclusion, "will anyone care about this record of au courant R&B, soul, and junior high pop five minutes into the future?

"[15] Jon Caramanica of The New York Times called the album "an amiable collection of age-appropriate panting with intermittent bursts of misplaced precociousness", but added that "Bieber's fumbles are easily muffled by his production — more technology — which, while less ambitious here than on his debut EP, is still brutally effective.

"[17] Rolling Stone gave it three out of five stars and called it "a seriously good pop record, one that mines vintage teen-pop themes but plays like a primer on 2010-model bubblegum.