I'm retired, well into my 70's (w/ lots of "senior moments")and have been producing my songs since I retired.
I've been a Cakewalk\Sonar user since the days of MS-DOS and have produced 8 CD's of folk songs/ballads but strictly for friends and family.
I'm running Sonar Platinum Pro DAW on both a desktop and laptop PC. Here's an incomplete list of the music software I use
Garritan/Makemusic: I have every program Garritan ever produced.
Native Instruments: Komplete 2, 6. and 9 plus several other separate programs
Real Guitar: Latest version
Many of the Wavelore instruments
and a lot of specialized ethnic instruments.
Sony Sound Forge Pro 11
I work almost exclusively in midi (I'm a very bad piano player) Sometimes recording only a single line at a time and then when the song is finalized I do the vocal part. Lastly I bounce Midi to audio and go through the mastering process.
I love both the technical and artistic aspects of the music making process and am always trying to get a more in depth understanding of both my various software programs and music making in general. I am not very knowledgeable about music theory thus the folksong/ballad genre works well for me. I do however love classical music with Ralph Vaughan Williams having already captured the music in my soul.
Not quite sure why you've come here since you seem to have some pretty intensive experience with MIDI.
Nonetheless you're most welcome.
As you can see I've begun but nowhere near completed a tutorial on GPO5. I've got stuck whilst I delve into the XML and SFZ code files that make up the orchestral library. What I don't like is the inconsistency in the controls between the legacy GPO4 instruments and those introduced in 5. So I'm recoding most of the files to insert stereo stage where it's missing.
The next set of modifications, apart from resetting the loop points for the oboe d'amore low samples, which click, is to insert an ADSR set of controls for all instruments including the ones that were in GPO4. It means re-laying out the controls tab so that there are three rows of five knobs.