Hi Jonetsu,

2015-01-01 22:25 GMT+01:00 jonetsu@teksavvy.com <jonetsu@teksavvy.com>:
Hello,

  Is it possible at all to use any regular MIDI external keyboard to
input notes into the Muse sequencer ? 

Absolutely.
 
I have a fluidsynth flute sound
loaded in Muse and it can play by dragging the mouse across the gui
keyboard.  I have qjackctl and also launched a2j, but there's no Muse
in sight to make a connection between a M-Audio keyboard and something
in Muse. 

Normally input devices should appear automatically if they exist prior to starting MusE, there might be some condition where this isn't happening though.
Are you using qjackctl to make the connection?
MusE prefers if all connections are done from inside MusE, check out the Midi and softsynth configuration dialog under MusE settings.

You may want to skip directly to the alternative route, start MusE with the switch -A, this will enable connecting directly to the alsamidi device. After doing that, check that the keyboard has appeared in the config dialog and you should be good to go.

Is Muse a sequencer that only works using a software pen to
draw notes ?

I'm sure there are others, maybe someone can fill in.

Regards,
Robert