I've notice that a lot of people are having issues with getting gold stars on some songs and I found this website that may help, it give all star cutoffs for all instruments for all rockband games. Thought I'd post it. http://rockband.yajags.com/cutoffs/
Also if anyone is a good expert singer my band is looking for one, we currently have hawksrule1234, oOo donut oOo and BMKehoe. If your wondering why you should go with us, look at the guitar score duel and bass score duel leaderboards cause oOo Donut oOo is #1 and #2.