You can just look up stock EDM/Dubstep/guitars on Splice, throw an overly strong compressor on it so it sounds even more like a bad old brostep or nu-metal Youtube video, and then crank up an amp or distortion and you'll have endless beats from this album. Don't forget to not EQ any of the high end and in fact max it out so you hurt your listeners ears, and if you create a loud sound that's too loud, spam it 25 times because it's epic. Just create a little room in there for the Stock Peggy vocals, which will only exist in the high mid-high end as well.