What song are you currently working on and why?

What is keeping you up and giving you nightmares about this song?

"Satch Boogie"

I first heard this when I was 15. Blew my Mind (whole Album for that matter). Did not have the chops at the time so put it on the back burner until about 1 month ago (many moons later) when my 16 yr old son wanted to learn to play it.

Tapping part at end has me sweating bullets.