lesson learned last night: when inebriated, stick to singing Rock Band on Hard. yes, Expert is easy enough when i have full control of all of my faculties. but, when i don't, i just end up failing out of anything i try. on Hard, there's enough wiggle room with the pitch that i can easily not fail out.
or, better yet, it might be better to stay away from singing Rock Band when inebriated, because i sound like crap when i sing. :P