RushJet1, composer of the fantastic "cover playthrough" for Mega Man 3, has returned. This time he's rearranged Mega Man 1's soundtrack with added stereo and VRC6 effects. Developed by Konami, the VRC6 chip added three additional sound channels to the typical NES's four. Apply it to Mega Man's soundtrack and, well, you've got magic.
The above video is a complete gameplay run of Mega Man using the new soundtrack. You can listen to or purchase it from Bandcamp as well. If you're a fan of Mega Man music (or chiptune in general), you can't go wrong here.
Thanks to Tony for the tip!