Alright, some more impressions for you guys.
I explored some of the other modes of the game and had varying levels of success with them. The "Games" Mode has 3 different sub-modes, including the conductor mode, the bells mode, and the pitch perfect mode. All three are a bunch of fun, but have pretty limited life due to the very, very small selection of songs that can be played within them.
The drum mode is awful and adds nothing to the game. Playing the drums by holding a sequence of buttons is pretty damn awkward and it doesn't feel anything like really playing drums.
I'd say the biggest thing I walked away with after tonight is the fact that you absolutely MUST play this game with others to enjoy it. Playing alone is boring and completely mindless. However, with a group of people its great to build a chemistry together and hear a decent rendition of the song. Once you learn the boundaries of improvisation, incorporating it will spice up the song when playing in the jam mode.
All in all it is a decent game, but it feels like its missing something. I strongly, strongly advise avoiding the game if you don't have people to play it with, otherwise it makes for a unique and decent party game.