Yesterday afternoon my son and I got inducted to the Rock Band Hall of Fame by completing the 8 song challenge in Moscow.  Rock Band was updated a few weeks ago to allow bands who play on medium to earn more fans.  Although my son usually plays on Hard, I usually play on medium and dabble here and there with hard.  For an 8 song set, there was no way I was playing on hard!  We did well, getting 5 stars on 6 of the 8 songs and 4 starts on the other two.  We unlocked the Hall of Fame achievement which allows you to use transparent instruments, my son got a guitar and I got a bass.