Advantages of bisonoric bandoneons

Learning bisonoric could be difficult at the beginning, but it's worth.

Compared to the logicality of unisonoric bandoneons, the "chaotic" keyboards of bisonoric models have 2 main benefits:

1. you have 2 different schemes to play the same musical passage: one for opening, one for closing. If a passage is hard opening, could be easier closing, or viceversa;


2. you have the possibility to play some chords more easily, especially some open chords and those chords needed in Tango: actually, some chords and harmonic sequences for 142 bandoneon were created by some Tango Authors directly on the instrument.