I'd go so far to say this is my favourite cover of Michael Jackson's 'The Way You Make Me Feel'. But my musical opinions are not the point of this post. Rather it's that sometimes with just a couple of pieces of gear and some talent good music can be made! In this case, Kawehi utilises a BOSS RC-300 and BOSS FS-6 Switch Pedal and her voice.
Kawehi is a DIY musician and no stranger to creating compelling covers with a range of different hardware and software. You can check out her YouTube channel here and you'll like it, especially if you like dogs.
Want to improve your singing voice and learn useful vocal techniques? Check out Vocal Techniques 101 - Singing with Tammy Scheffer at AskVideo.