The Nintendo Gameboy started off the whole handheld gaming business a long time ago and now it seems that some folks are hoping that the Gameboy original is going to start off a new revolution, but this time its music and not gaming.
According to the YouTube user MrSeberi;
Thank you so much for your nice comments and your support! To answer some of your questions:
Yes, all the sounds come from the Game Boy. No effects were used.
The yellow thing is (as some of you already pointed out) the Game Boy Camera.
No Game Boys were harmed during the filming of this video.
Source [Geeks Are Sexy]