I really love the sound of tango and I'd like to buy a bandoneon.
With the relationship but seeming distinct existence from the Concertina, I don't know how to identify which kind of Concertina/Bandoneon would be able to give me that Tango sound. Can a 20 key C/G do it? a 30 key? Is the 142-note bisoronal the only choice? Which characteristics are required and acceptable?
Also, are these characteristics available in a non-professional instrument? I am an amateur player and can't justify a $3000+ purchase for an instrument I'll probably never be any good at. Yet, I don't want to buy the wrong kind that has a more Irish sound.