Looking back more than a decade later, the My World songs remain a masterclass in pop construction. They captured a specific moment of teenage innocence while simultaneously laying the groundwork for the global superstar Bieber would become.

The songs from this era are a blend of teen pop, dance-pop, and R&B influences.

Slow, syrupy ballad. Excessive autotune in parts, but the sentiment is pure. Became a meme later (slowed down 800%), but the original is sweet. 7/10

This full-length studio debut saw Bieber lean further into R&B-influenced pop. The cultural juggernaut "Baby," featuring Ludacris, became one of the most-viewed and discussed music videos of the decade. Other tracks like "U Smile" and "Somebody to Love" (which later received a remix with Usher) showcased his growing vocal range.

If "One Time" proved Bieber could sing, "One Less Lonely Girl" proved he could sell a story. The track, heavily influenced by his mentor Usher, leaned into the R&B balladry that defined late-2000s pop.