Otto Musica Otto Natural Rosin Regular For Violin/Viola/Cello With Italian Ingredients For violin / viola / cello With Italian ingridients Otto Natural Rosin Regular For Violin/Viola/Cello With Italian Ingredients For violin / viola / cello With Italian ingridients OTTO natural rosin for VN/VA/VC with Italian ingredients in a charming violin shape OTTO natural rosin for VN/VA/VC with Italian ingredients in a charming violin shape