I see what you mean - something doesn't sound quite between rows 10 and 20 in frame 06, but I don't have specifics on what.
In the meantime, here's a slightly edited version:
- Removed the Duty 0 setting from instrument 00. This allows you to use the Vxx effect on this instrument (the default duty cycle is 0 anyway).
- Speaking of which, during the last half of the song I changed the melody from duty 0 to duty 2 (square wave). Maybe this will help you pin down what's wrong with those chords, because Pulse 1 isn't actually part of the chords here at all.
- Cut frame 04 a little shorter so the following notes align right at the start of frame 05. Makes more structural sense this way.
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