Know the Music Symbols is the recent release app of Dodo Violin, a series of musical educational applications by Dalian Daduo Electronic Commerce Company, Ltd. It covers more than 250 music symbols under 13 categories, which the learners need to know in musical learning. It combines with a variety of interesting exercises to help learners become more familiar with the usage and meaning of each music symbol. To learn or to practise, the easy one or the hard one, or just focus on the key and weak spot, it is all up to you and it is suitable for different age of musical learners. Clear classification, simple background and easy operation may constantly lead the study enthusiasm of the learners to a high level!