Colourstrings Violin ABC Book D: new and revised version with additional material (2018). D Book Appendix is included in this publication. The Colourstrings method developed by the Szilvay brothers has gained an international reputation and is taught all over the world. Geza Szilvay has made new, revised editions of the popular violin tutors, which are now available in six volumes (A-F) and are designed for children aged from 4 years. Suitable also for group teaching they make music reading easy right from the start. The strings are symbolized by four characters and different colours. Colourstrings is the first violin method that makes use of natural harmonics in first position to teach the left hand optimal, relaxed position