I'm just opposed from using any iconic song such as that one. It would remind the player too much of the original game and distract from the level. Megalovania is arguably the most popular song of one of the most popular games. When your music selection is good, you invoke the opposite. You use a good, yet obscure song so when people play the game the song is from or listen to its music, they are reminded of the hack that introduced them to it. Just look at the comments on Youtube videos with the original versions of songs used in Megamix or Metal Sonic Hyperdrive. The worst that can happen is that someone would already know the song and appreciate the reference.