These little shaky "ovinho's" (little eggs) are really handy, add a great texture to any style of music, and are practically unbreakable! Great music with children and right on up to subtle pieces with professional groups. Great to shove in your pocket and take along to festivals and parties. They are always a great "jam igniter"! This model is a larger than usual shakey egg, and as such there is more volume etc than equivalent smaller models.