Qmidiroute

sudo apt-get install qmidiroute

QMIDIROUTE(1)                                                                                                    QMIDIROUTE(1)

NAME
       qmidiroute - MIDI event processor and router

SYNOPSIS
       qmidiroute [OPTION] [file]
       qmidiroute { --help | --version }

DESCRIPTION
       qmidiroute  is a versatile MIDI event processor and router for the ALSA sequencer.  The graphical interface is based on
       the Qt4 toolkit.  qmidiroute permits setting up an unlimited number of MIDI maps in which incoming events are selected,
       modified  or even changed in type before being directed to a dedicated ALSA output port. The maps work in parallel, and
       they are organized in tabs. With qmidiroute it is for example possible to change or invert the scale of a keyboard,  to
       transform keyboard strokes into program changes or controller data into notes.

       Incoming  MIDI  events  can  be  logged  in  a list and are displayed in different colors according to their MIDI type.
       qmidiroute provides one ALSA input port and as default two ALSA output ports. The numerical ALSA client id is displayed
       as part of the window title.
...
EXAMPLES
       An example MIDI map file can be found in /usr/share/qmidiroute or in /usr/local/share/qmidiroute

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creat per Joan Quintana Compte, octubre 2010