7/8 INVENTION

       7/8   |: .  *  .  *  .  *  .  *  .  *  .  *  . :|

claves       x     x  x     x  x     x     x  x  x   

djembe one   B  o  S  o  O  s  O  o  S  s  O  s  S  o

       var   B     S     O  s     o  S  s     s  S   

conga        o  B  o  S  o  O  s  O  o  S  o  S  o  B

       var   o  B  o  S     O  s     o  S  o  S  o  B