Thanks for playing!
We ended up running out of time to add key re-mapping, and the .chart files we used were based off Guitar Hero/Clone hero, so they may have been a little left-hand centric. Some of those chords may be impossible with just the number keys.
I'm also glad the songs weren't so easy for you and that it adds to the re-playablility. The music sync was a challenge, but the most important one for this type of game.
It would've been cool to add a score leaderboard! Thoughts for next time :)