Guitar Hero III

Here's where practice mode may actually come in handy. If you are a skilled player, you should be able to make it through the most part of this career without a problem, but may run into some difficulties. Head to the practice mode, and slow down the fret board as much as you think is necessary. Just knowing what notes are where helps a ton, because sometimes you just can't see them all when they're coming at you.

See "Buy a Guitar Already" for an easy achievement once this is obtained.