Tip: When determining a time limit, remember that players won't be as familiar with the level as you are. If you normally complete the level with the timer around 100, others might run out of time on their first try.
just because it's an electric guitar doesn't mean you have to use @17, even you noticed it doesn't sound that good. i'd recommend using @0 or @1 instead, as they sound a bit closer to overdrive guitars. also, i'd recommend you give the @10 an attack of F instead of using its default adsr.
other than that, this is actually pretty well made. nice!