Support and discussion for all of Akai’s modern standalone MPCs including the MPC X / X SE, MPC Live 1, 2 & 3, MPC One / One+, MPC Key 37/61.
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By Jean-Marc Liotier Wed Aug 26, 2026 9:01 pm
Elektrobolt wrote:File names themselves don’t seem to matter much to the MPC, but the name field inside each .progression JSON file definitely does — that’s what the MPC parses during startup. The first dash appears to split the main menu category from the actual progression name, and everything after that is used for the progression submenu.
That is something the generator could easily do. If you feel confident enough to say what would work best for easier MPC ingestion and navigation, please specify your dream naming scheme and we'll implement that !
By Elektrobolt Wed Aug 26, 2026 10:55 pm
Jean-Marc Liotier wrote:That is something the generator could easily do. If you feel confident enough to say what would work best for easier MPC ingestion and navigation, please specify your dream naming scheme and we'll implement that !

This is how I changed the name field in the .progression files within one zip file:

"Jungle/DnB-Liquid DnB 1 Smooth (i ♭VII ♭VI V)"
"Jungle/DnB-Liquid DnB 2 Classic (i ♭VII ♭VI V)"
"Jungle/DnB-Liquid DnB 3 Jazz (i ♭VII ♭VI V)"
"Jungle/DnB-Liquid DnB 4 Modal (i ♭VII ♭VI V)"

In this structure:
  • "Jungle/DnB" is the Music Style heading shown in the MPC dropdown.
  • "Liquid DnB" is the Named Progression within that style.
  • “1 Smooth”, “2 Classic”, “3 Jazz”, “4 Modal” are the individual files, each labeled with a different Harmonic Style Category.
  • The parenthesized (i ♭VII ♭VI V) is the Roman Numeral Analysis of the progression.
Regarding the MPC:

This results in a main menu entry "Jungle/DnB" and when tapped opens up the four, e.g. "Liquid DnB 1 Smooth (i ♭VII ♭VI V)" progressions.

The first dash/hyphen in the name appears to be what separates the menu heading "Ballad" from the menu items "Ballad 01", so the music style cannot contain a '-', as in "Italo-Disco/House" (I just cut the "-Disco" to "Italo/House" which may have been wrong, but I was impatient).

Because I was unsure about how dash/hyphen was used overall, I refrained from using it at all, except as the one separator above. That's also why I chose space as the separator of the roman numerals.

Also, the MPC seem to have some form of auto spacing when displaying "i-♭VII-♭VI-V", because it looks like "i-♭VII-♭VI- V" (only seem to happen for capital letters after non-letters. I mean, it's not like a did deep research on this, but one wants clean classy options. ;)

It does not appear as though the file name has any bearing, but I honestly haven't tried anything after I realized the name field is being used, so I just cut the specific harmonic style category information out (number and label), and of course slashes cannot be in the file name (I just removed it).

If unclear I can send you the files I've created so far.

BTW, I'm really tired right now, so I might write this like it's blah blah blah, please let me know and I will make it better.