Justin Bieber debuts 'Believe Acoustic': 'Nothing Like Us' break-up song tops the new releases

Justin Bieber has released his highly-anticipated acoustic album, titled "Believe Acoustic," which features the unplugged version of songs off his "Believe" album plus three new tracks -- "I Would," "Yellow Raincoat" and "Nothing Like Us."

"Nothing Like Us" is Bieber's break-up song, chronicling his relationship with actress Selena Gomez. 

He tells Billboard, "Because at the end of the day, there's nothing like us, you know? That's just it. It is what it is. People are going to relate to that." 

One celeb who is excited about the new album is none other than boxer Mike Tyson, who tweets, "Hey @justinbieber, I'm looking forward to the new #BelieveAcoustic album."

You can listen to "Nothing Like Us" below -- what do you think of it? What do you think of the Biebs' new acoustic album as a whole?