For the guitar battle with Slash, you get points when he misses. You playing his notes does nothing.
For the boss battle, he'll throw his ball down at you twice, then do his low attack. The key is to be on the platform when he's approaching low, and jump over him. Then run to the other platform and play the guitar twice. The second time he'll fade out, and he'll skip throwing his ball down and go right to the low attack. Go get the guitar and do it again, until the level ends. I can beat the boss losing no more than 2 lives consistently.
jakenator85
well you just answered it
life
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