MIDI Auto-Accompaniment Systems

RMCA Pro & Portable RMCA Pro  -  Realtime MIDI Chord Arranger Pro

Realtime MIDI Chord Arranger Pro (RMCA Pro) is auto-accompaniment software for Windows® which offers all major features of a high quality MIDI keyboard.

Click here

... to read important information about the compatibility of RMCA Pro
with various computer types and Windows versions. Thank you very much

                    Click hereif you would like to see how to order easyly RMCA Realtime MIDI Chord Arranger Pro

It comes with chord recognition, based auto arranger with style creator and editor, recording section, about 35 demo styles, up to 16 "fingered" and 10 "two-finger" chord types, MIDI-Import/Export and much more. Songs can be recorded in real time, using the computer keyboard, a virtual keyboard, chord pads or an external MIDI controller, and can be reproduced with hundreds of free downloadable different RCS styles.

In addition RMCA Pro also supports styles for YAMAHA® arranger keyboards. Tens of thousands of those styles are available on internet for free download. - More ...

Moreover RMCA Pro offers a chord progressions random generator. Depending on various options it randomly chooses matching chords from specific chord groups and generates via one mouse-click complete songs from any number of measures with variations and fills. This makes it an ideal jamming tool and helps to practice GUITAR or BASS in each key with a backing band and countless backing tracks, "composed on the fly". 

Other unique features of RMCA Pro are its ability to create an accompaniment style from virtually any MIDI input (MIDI file or live music) and its melody-Ad Lib function that allows even the inexperienced keyboarder to play and improvise in any key.

A little wizard will take the settings that are needed for various purposes. It can be opened any time by selecting "Help/Assistant" from the main menu.

  • In practice mode RMCA Pro automatically generates backing tracks, using randomly loaded styles. This makes it very easy to practice guitar or bass and be accompanied by a backing band with countless songs, because change of key and chord change are displayed a 3/4 measure before.

  • In playback mode RMCA Pro also generates tasteful tracks for practicing, movies or presentations in  which the chord progressions random generator helps to get musical ideas.

  • In normal mode the user can actively make music on his own with his computer or a simple MIDI controller. RMCA Pro turns the MIDI controller or the computer into a full-featured MIDI arranger keyboard.

The DEMO version of RMCA Pro has no time limit and generally has all the functions of the registered version except for the saving capabilities, some special functions and the fact that only the about 35 included demo styles, several hundred downloadable so-called "1-part styles" and (- not with regard to MAAS -) styles for YAMAHA® arranger keyboards can be processed (but always only for a limited time).

Uninstall RMCA Pro

RMCA Pro does not need to be installed. The program also runs from USB sticks or flash drives and offers a switch which determines whether it is running in normal mode or in portable mode (Main menu -> Options -> Portable version). Therefore, there is no longer need to download or purchase the portable version of RMCA Pro.

Setup will NOT modify your computer configuration, but only creates 1 folder (...\RMCA) and 3 subfolders. If you would like to remove the application from your system, simply delete the program folder (...\RMCA). That's all.

RMCA Pro's main menu

If you would like to learn more about randomly created
chord progressions and listen to audio medleys then

 Click here

Download RMCA Realtime MIDI Chord Arranger Pro (updated and enhanced in 2016/2017)

Download Portable RMCA Pro (updated and enhanced in 2016/2017)
Using the XDigits Download Manager for downloading and installing MIDI software 

By placing an order, you confirm that you have thoroughly tested the trial version of
RMCA Pro (which can be downloaded here) and that it meets your expectations.

 Personal: About me and RMCA Pro


 RMCA Pro audio & video clips 

RMCA Pro, Jam partner and MAAS are particularly suitable for creating
backing tracks in a few minutes and jamming along to them.

Example 1:  Ballad in Bb-major/G-minor   -   RMCA Pro + Guitar Modeling (recorded live in 2015, MP3)


Example 2:  Blues/Rock in Bb-major   -   RMCA Pro + Guitar Synth & Modeling (recorded live in 2015, MP3)


Example 3:  Slow Blues in A-minor   -   RMCA Pro + Guitar Synth & Modeling (recorded live in 2015, MP3) 

   More examples:  RMCA Pro + Guitar Synth & Modeling
(33 MP3-tracks, recorded live in 2018)

Track01      Track02      Track03      Track04      Track05
Track06      Track07      Track08      Track09      Track10
Track11      Track12      Track13      Track14      Track15
Track16      Track17      Track18      Track19      Track20
Track21      Track22      Track23      Track24      Track25
Track26      Track27      Track28      Track29      Track30
Track31      Track32      Track33

   My own private playlist: 66 instrumental
tracks, recorded live and modern mastered

( - ???  Usable for Windows system users only  ???)

Important noteUsers of other operating systems need
perhaps an "MP3-player"
 that can handle *.m3u files (playlists),
such as for Apple users for example "Foobar2000" or "VCL media player".
In the corresponding 
players - at the configuration line
provided for it in the settings, 
e.g. under "Play location" at
"Foobar2000" or for execution with a 
suitable Internet browser the
following case-sensitive entry must be made or 
taken over by "copy & paste":


or Click herefor all tracks.

 The "special thing" about all my music files - some of which were created more
than 15 years ago - is that they are "mastered" in an optimal and modern way.
This applies to the uniform sound, regardless of when and how the recordings
were made, as well as to the frequency response, dynamics, volume and sound,
which is now essentially optimized over all years of creation and independent of
the instruments and technical possibilities used, and which corresponds to the
so-called "industry standard" (e.g. for studio recordings of drums, guitars etc.).

  Another special feature is that no permanently installed Internet connection is

required to play the music files. The files have been stored online in a format that
   allows them to be "streamed" "outdoors" as "mobile data" using e.g. LTE
(Long Term Evolution). With the cellular network, mobile data can be
transmitted in greater quantities and at higher speeds over the air interface.
Please activate your network for mobile data playback and start the playlist


in your mp3 player or within your internet browser.

Click hereif you would like to see how to order easyly an XDigits MIDI Auto-Accompaniment System.

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