* Is going to be tough to sing and play guitar simultaneously. I tried singing on Medium and grunging on Expert, playing Nirvana's In Bloom. It was the only song that I knew 99% of the words to. I failed out of the vocals because I decided to do this just after waking up, but I saved myself with the guitar.
* Is great fun online. Played with Slunks and jimb0 before leaving for work today and enjoyed myself greatly playing guitar and bass.
* Might have a lot of manufacturing defects. My guitar's tilt function is backward, meaning I have to bend DOWN to activate Overdrive. It's also incredibly sensitive, but it might be as a result of the defect. Simply strumming can activate Overdrive if the guitar sways too much. I'm returning it to EA, who has a WONDERFUL return policy - they send you a new guitar, you send yours back. If they don't get it back... you get charged $20. Of course, you'll need a credit card to get a new guitar this way. They ship 2-day air, so I hope to get mine the day after Thanksgiving.
Also...
Downloaded the Metallica pack! I only played Blackened (my fav song of course) and that is clearly deserving of the title Impossible Song (actual difficulty label as listed in Rock Band). I can get through most of the song but trying to switch from the bottom portion of the neck to the top for the solos is something I must learn!