Beyond "Baby," the album was packed with hit singles. The second single, , was released in March. A mid-tempo track with a driving drum machine beat and layered harmonies, it told the story of a long-distance relationship and Bieber’s determination to make it work. The song’s lyrics— "I just wanna hold you, never let you go" —were simple but earnest, resonating deeply with his core audience. It peaked at number 21 on the Hot 100 and became a fan favorite, often cited as a deep cut that showcased his improving vocal control.

The final major release of 2010 came in October: . Written as a charitable single for his holiday album, Under the Mistletoe (released in 2011), "Pray" was actually released as a standalone promotional single in late 2010. It was a stark contrast to everything else he’d put out that year. A ballad inspired by Michael Jackson’s "Man in the Mirror," "Pray" featured gospel choirs, strings, and socially conscious lyrics about poverty, war, and natural disasters. Bieber sang lines like "I close my eyes and I can see a better day / I close my eyes and pray." The music video intercut his performance with footage of real-world suffering, including the aftermath of the 2010 Haiti earthquake. While not a massive chart hit, "Pray" showed the first signs of an artist who understood his platform and wanted to use it for more than just love songs. It was a maturity move that signaled the direction he would take in the years to come.

But 2010 wasn't just about the album singles. It was also the year of the remix and the soundtrack feature. In July, Bieber dropped , the theme song for the 3D documentary Justin Bieber: Never Say Never (which would be released in early 2011). The song was a motivational hip-hop-pop hybrid. Opening with a spoken-word intro from Jaden, it featured a stomping beat, a melodic piano line, and lyrics about overcoming obstacles: "I never thought that I could walk through fire / I never had the money to take me higher." At 16, Bieber was already curating his legacy, positioning himself as a fighter and an underdog. Jaden Smith, then just 12 years old, delivered a charismatic rap verse, creating one of the most memorable teen collaborations of the year. The song would eventually become a top-ten hit on the Hot 100.

The fourth single, , was a departure. Produced by the legendary Benny Blanco and written by Bieber alongside Heather Bright and The Stereotypes, the song was an uptempo club anthem. However, it featured a twist: a gospel-inspired choir in the bridge, giving the track an unexpected soulfulness. The song’s message was about finding that one person who makes you feel complete. Bieber’s vocals were more urgent and powerful than on previous tracks, showcasing his growth. He even released a remix version with his mentor, Usher, which further blurred the lines between teen pop and adult contemporary R&B. The song peaked at number 15 on the Hot 100.

The narrative of 2010 begins with the release of on January 18th. As the lead single from My World 2.0 , it was more than a song; it was a cultural detonation. Built on a catchy synth beat, a simple but effective chord progression, and an instantly recognizable hook, "Baby" became the anthem for a generation of young fans. In the song, Bieber sings about a first love that ended in heartbreak, delivering lines like "You know you love me, I know you care / Just shout whenever, and I'll be there" with a blend of innocence and swagger. Ludacris’s rap verse added a layer of street credibility. The music video, featuring a cameo from Drake, broke YouTube records and became the most-viewed video on the platform at the time (a record it held for nearly two years). While critically divisive—praised for its pop production but panned by some for its repetitive nature—"Baby" was inescapable. It peaked at number five on the Billboard Hot 100 and became one of the best-selling singles of all time.

Beyond the studio recordings, 2010 was defined by Bieber’s relentless live presence. He performed at the White House for the Fourth of July, appeared on every major talk show, and completed his "My World Tour" (which had begun in 2009 but ran through all of 2010), playing over 120 shows across six continents. Each performance of "Baby" or "Somebody to Love" sent arenas into a frenzy, solidifying the image of a polite, talented, and impossibly famous teenager with a mop of hair that launched a thousand haircuts.