Wow never saw Notated Berimbau! It sounds right to me, and looks right. For me it is still as difficult as playing Pandiero,just to hold the berimbau on your pinky finger is a trip! an symultaneosly move the coin or stone back and forth against the wire, while the right hand strikes with the caxxixxi draped over your middle and ring finger of right hand,while holding the stick for striking. whew, it's work for sure but such a beautiful sound the Berimberim bau ,berim bau, I used to play it when I was with Sergio Mendes many berimbaus ago.....At your Service...JC JOHNNY CONGA....