Feel Good Inc. is by the alternative hip-hop group, Gorillaz. It is in the first tier of Guitar Hero 5 at the venue, The 13th Rail.

Bonus Challenge[]

The bonus challenge is for vocals.

Objective: Maintain a multiplier of 4x or higher.

30 seconds = Gold

60 seconds = Platinum

120 seconds = Diamond

You will be rewarded with Izzy Spark's "Impresario" outfit.

How to Get Diamond[]

Play it on Easy. If you are not much of a rapper or Gorillaz fan and you are into the challenges, do it for the good of you.