Titled "Perfect Together" the slow-tempo R&B/pop tune hitting the web over the weekend is only two minutes long and sounds unfinished, reported Aceshowbiz.
Many people are assuming that in the leak the girl the 21-year-old "Baby" hitmaker is talking about is his on-and-off girlfriend Selena Gomez.
The song features Bieber singing about how he and his girlfriend are perfect for each other although their relationship could sometimes feel wrong.
However, there are still speculations if the song is an old demo or for his new album on which he has been working since past few months.