Im working on this passage for my new song, that is 230 bpm, two guitars. Both played and recorded by me(thats the plan). Guitar one is going 4 key sweeps, 5 and 6 string sweeps. Guitar two is doing 6 finger taps over the same patterns , but at 180 bpm.....Meshuggah/Death/Suffocation/Gojira/Necrophagist style riff. Bwahaha. Its only going to be a short passage though, probably 45 seconds.
Its mind blowingly hard to write, but I have it in my head and I can physically play it. But just gotta find the right notes, which is always the hard part for me.
Hopefully Ill have the song wrote by next month haha.
It takes me awhile to write when Im mostly doing all instruments myself, and programming drums.