Since you are a new member, you can not yet post a link to your software, but if you can tell me where to find it in a roundabout way, I would like to check it out.

I have a MASSIVE collection of MIDI files scoured from the web, as well as ones I've made myself for a project I've been working on. (A search on my laptop just now yielded 23,962 results... plus thousands of others I moved to an external drive a while back 😆 )

I only listen to a very small small set of these files as actual music (a few hundred at most), and the vast majority of the rest are for testing purposes while working on my MIDI editor.

Things that I have needed to check the collection for in the past (many of which I found in files that did not save the correct MIDI type within the file itself):

MIDI file type: 0 or 1 (and also 2!)

MIDI file MIDI type: GM, GM2, GS, XG

MIDI patch contents (ie, needed to find files that contained Dog Bark mapped to "standard" GS and XG patches)

Various XG specific contents (MSB 64 for SFX, MSB 127/128 for percussion)

Various GS specific contents (ie, custom drum part mapping)

Various GM2 specific contents (MSB 121 melodic, MSB 120 percussion)

Specific CC commands (ie, I need to find a batch of files that all contain portamento)

and obvious standard things like song titles, artists, etc

and probably lots of other things that currently slip my mind.

Hi Jason,

Thanks for your reply. This is very useful input for me.

I understand that I cannot post a direct link yet as a new member, so I will respect that. The project is called MusicNote Haven MIDI Manager, so it should be possible to find more information by searching for that name.

The program is being built for exactly this kind of situation: large MIDI collections with files from many different sources, often with inconsistent names, duplicates, unclear metadata and a lot of manual checking needed.

The current version already includes indexing, searching, reviewing, listening and organizing workflows for .mid, .midi and .kar files, together with several MIDI analysis and classification features. I am also preparing a website and manual that describe the current functionality more clearly, because it is easier to explain properly there than in a short forum reply.

Your collection sounds like a very good real-world test case. If you are interested, I would really appreciate your feedback once the preview is available, especially on what works well with a large archive, what the program misses, and which analysis or review features would be most useful to improve next.

Thanks again for taking the time to reply.