This is another double puzzle kinda thing. (You're still at Part 1. Part 2 will commence once you access the next page.)

Remember when I said that the only important parts in the last puzzle was only the beginning, and the end? Well, I wasn't lying then, however... you might need to focus on the chords now. Collect all chords, and make sure each chord is played once. Go in order of appearance, and count. No encoding is necessary. You'll know what to do then.