Mutya is an extremely difficult Super Mario Bros. 1 created by Yuu in 2003. While this isn't too popular for being challenging, it has four levels that require the use of glitches, tricks, and such to conquer the hack.
This TAS is 2.9 seconds faster than Chatterbox (티어)'s TAS.
Thanks to w7n for retrieving the hack, and here's to me for providing you the link to its IPS patch. :)