Bieber uses a rap-sing style in the pre-chorus and his signature falsetto during the bridge.

Heavily relies on a repetitive, catchy chorus ("You got that yummy-yum...") designed for viral appeal. Meaning and Lyrics

A "chill" mid-tempo track featuring a crisp bass line and plinking keyboards.

The "yummy" in the song is widely understood as a reference to sexual chemistry and intimacy within his marriage.

Verses mention his success and lifestyle, such as "Rolling eyes back in my head, make my toes curl" and "Drew House slippers on with the smile on my face".

.m4a is a standard MPEG-4 audio file, commonly used by Apple Music and iTunes .

The "01" indicates it is the first track of the Changes album.