I'd like to get an hybrid instrument between hayden duet and bandonion, with double reeds to improve the sound, and with double buttons for sharp and flat notes on each hand so that it could be easier to play in any keys. But I don't know if it's a good idea until I will get this instrument because the space between the buttons will be a little larger than the hayden duet, like the bandonion.
But I listened to your videos and they sound very good. Do you have 2 different hayden duet?