To Craig_UK:

I believe there are 3 comment areas:
1. Instruments 2. Arrangement Style and 3. Musical Interest or Taste. (#4) If commenting on someone's performance.

Which area are you saying is terrible? The sounds coming out of the speakers, the arrangement or the Musical Interest?

I believe it's good and healthy to have both negative and positve feedback. But feedback should be explained a little to focus on the "why". Just simply saying terrible with no explanation leaves the door wide open for misunderstandings...

AnthonyC