I never really thought anything would come out of the music creator. I figured the songs would fall into 3 categories, in order of decreasing frequency:
1. Crap from people just messing around with it
2. Hardcore wankery by people trying to make the most difficult guitar/drum charts possible.
3. Stuff that might be good if you could do vocals (i.e., good covers of existing songs)
How far off am I?