I've used one for years - not so often live, of late, but on most of my albums (and always use one as a tool for explaining about notes, melody and chords at workshops).

I don't practice the accordion much these days, the angle of the keyboard is not ideal with my talons (acrylic nails), but the tube extension (does yours have one?) allows me bring the melodica to the front like a piano, and tip it slightly - which is much easier. I also made a new mouthpiece (adapted from the nozzle of a garden fountain, since you ask) which fits the lips better.

I use a lot of 'pedal' technique - holding notes down longer than necessary to get a smooth legato effect with brief drones and chords for good measure. I do sometimes play full chords, but this needs a lot of breath, so you need to develop your breathing, as any wind player or singer must.

I use quite whistle techniques on it too. You can tongue and trill notes, to achieve effects that no bellows ever could.

I used to hang out with Gang of 4 in the Fenton pub. Jon King - what a fine man (where is he now, anyone know)? Ron Sexsmith's bass player uses one as well.

Great instrument, not to be sneezed at.

Though on second thoughts.....!!

Tom