25 colourful tuned plastic percussion tubesone set of octavator caps (8 pieces) and bag 3xC’, 1xC#’, 3xD’, 1xD#’, 2xE’, 2xF’, 2xF#’, 3xG’, 1xG#’, 3xA’, 2xBb’, 2xB’ the sound resembles a bamboo orchestra for music lessons and for ensemble the tubes are beaten against each other or against a padded surface very popular in music education, kindergartens, schools, therapy, drum circles, and for free improvisation USA