http://www.notessimo.net/page/browse/songs.html/_/video-games/other3/undertale-sans-r75530

^^^^ directly copied ^^^^
using for UTxMPC mod
also known as mus_muscle.ogg

<p><iframe width="100%" height="180" src="https://embed.notessimo.net/?oembed=1&url=https%3A%2F%2Fnotessimo.net%2Fs%2F76002" frameborder="0" scrolling="no" seamless="seamless" sandbox="allow-same-origin allow-scripts allow-forms allow-popups allow-popups-to-escape-sandbox allow-presentation"></iframe></p>\n<p><iframe width="100%" height="180" src="https://embed.notessimo.net/?oembed=1&url=https%3A%2F%2Fnotessimo.net%2Fs%2F75455" frameborder="0" scrolling="no" seamless="seamless" sandbox="allow-same-origin allow-scripts allow-forms allow-popups allow-popups-to-escape-sandbox allow-presentation"></iframe></p>\n<p>^^^^ directly copied ^^^^<br>\nusing for UTxMPC mod<br>\nalso known as mus_muscle.ogg</p>

Undertale - sans.