It gave me the same impression that Elite Beat Agents first did.
"Oh look, this seems enjoyable." "Oh what the crap, I TOTALLY HIT THAT MARK" "HOW DO YOU EXPECT ME TO HIT THAT" "THIS IS SO FULL OF BULL I CAN'T-" "oh look i finally did it" "okay wow this is actually a lot of fun" "I LOVE THIS GAME! :D"
It was going to be a Day 1 buy for me, and after the demo it's still going to be a Day 1 buy.