The audio in the game is really the only part that matters, and the songs are done well. Most importantly, you can adjust several different facets of the game's sound. So you can adjust the microphone level, turn down the lead vocals that are already on a track, or even turn up the earpiece on your headset for improved in-ear monitoring. The quality of the songs is good, and it's pretty much what you'd expect from a collection of covers put together for the sake of karaoke. Still, singing to the actual, original recordings would be a lot cooler.
Spend enough time with this game, and you might just become a better singer.
While the graphics aren't all that important, there is a visual side to the game. The different environments and stages all look decent and are full of various lighting effects and other neat tricks. You won't spend much time looking at anything beyond the words and the pitch meter, but the stuff behind it is passable.
All things considered, Karaoke Revolution Volume 2 isn't very different from the first game at all. The new medley and quickplay modes bring a bit more to the table, but the technology is inherently less impressive the second time around, and the scattered song catalog means that you might just want to rent this one, sing the four songs you can identify with, and then move on. However, this installment does still have its place in a group environment and makes for a good party game.