I LOVE GPO4!!! Found my old MIDI file I hadn't touched in years, and decided to give it the GPO4 treatment.
GPO4 and the Aria player makes it SOOOO EASY!!!
When I find my score, I of course will go back and put the missing percussion in. Quite frankly, it's been so long since I've worked with this piece, I've forgotten how the perc was scored. Please forgive the un-scored Tam-tam - I couldn't resist.