: Another 2010 leak, "Forever" showcased a slightly more mature vocal style as Bieber's voice began to change during puberty.

During the production of My World 2.0 , several high-profile artists and writers recorded "reference tracks" for Bieber to follow. Many of these have since leaked, providing a "behind-the-scenes" look at the album's creation:

Listen to 2010 : Unreleased Songs - Justin Bieber - SoundCloud

: Originally written for Chris Brown, this reference track features Chris Lawrence on vocals. Where to Find These Songs

: Leaked on December 21, 2010, this track is a classic teen heartbreak ballad typical of his early sound.

The year 2010 was the peak of "Bieber Fever," marked by the release of his record-breaking debut studio album, My World 2.0 . While hits like "Baby" and "Somebody to Love" dominated global charts, a parallel world of unreleased tracks, demos, and reference recordings emerged, many of which leaked or were discovered by fans years later. These songs offer a rare look at Bieber’s early R&B influences and the creative process during his transition from a YouTube sensation to a global pop icon. Top Unreleased Songs from the 2010 Era