Bieber released his first Christmas album, "Under the Mistletoe", which became the first Christmas album by a male artist to debut atop the chart.

Bieber's third studio album, "Believe", was released, marking an experimentation with dance-pop. The acoustic re-release made him the first artist in "Billboard" history to have five US number-one albums by the age of 18.

Bieber released his fourth studio album, "Purpose", which marked a shift towards R&B and EDM sounds and included collaborations with several notable artists and producers.