This time is a mash-up of the famous The Fresh Prince of Bel-Air theme by Will Smith, with the Murasaki Forest track from MOTHER 3.
OK, so it doesn't feature a lot of Nowhere Islands from the game. Bite me. It was actually a last minute decision to call it the "The Fresh Prince of Nowhere". For quite a while it was called "The Fresh Prince of Murasaki Forest" and it was about to be the final name, but then after modifying some images you see in the music video, I realized that "Prince of Nowhere" sounded funnier.
Plus, let's be honest, who can remember the name "Murasaki Forest" and tell it's from the game? I wouldn't.
Enjoy.