Thanks for playing! You make some very good points; it's true the difficulty is a little on the hard side (did you know there are two levels?! I think no one has heard the second tune yet!), that will take some tinkering to get right.
The beam... yeah. Undocumented "feature" you can press < and > to cycle through different displacement maps. It's not as polished as we'd like.
Thanks again for playing!