As if we didn't already know it!

[Reedwarbler]

 

[Deleted member 48]

Thanks for posting this. 
Nice video and + 20K watched this. That's positive. 

The accordionist at one point says the CBA pattern is based on regular minor thirds. 
That's true If you only take 1 row. 

I would have preferred he said based on a regular pattern of half tones from lowest to highest note.

 

[Glenn]

Great video.
Should be played in all schools when the kids have to stay in at playtime due to bad weather.

 

[jozz]

nice video!