Mod used
Whack your EX – https://gamebanana.com/mods/437113
NuSky Mod + Skyverse Demo – https://gamebanana.com/mods/369981
Whack OST – https://www.youtube.com/watch?v=NUWOhTvU8T0&t=3s
Soundfont
Skyblue, Skykit – https://gamebanana.com/tools/8991
Source
First, good video bro