Board Thread:General Discussion/@comment-26680716-20160501054031/@comment-24756472-20170105182303

Okay, so, first off, Sans attacks first, right? Every other battle, you attack first, and your opponent's boss theme plays(if they survived that first attack, anyway). So, if you're not the one to attack first, who's theme plays? Yours.

Secondly, Sans already has a battle theme. Song That Might Play When You Fight Sans. It never appears, but if Sans already has a battle theme, he wouldn't need another onet. If Megalovania was Sans' theme, there'd be no need for STMPWYFS to be composed at all - unless Toby just felt like trolling players. So, this means that Megalomavania should be your theme.