People always seem to post midis but no scores. Hate to break it to you guys, but if you're writing based on how the MIDI sounds, you're in for a rude awakening when you start putting your music in front of real people, and I hope that's everyone's goal here! Unless you are an electronic musician, then of course, that doesn't really apply to you, obviously
Anyway
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If you don't know how to make a PDF, or your program won't do it, Primo PDF will work well for you. Just please stop posting MIDIs with no scores, Thank you