Difficulty level, roughly compared to ABRSM exam grades. 0 is beginner, 9 is advanced (beyond grade 8).
Hey Presto! Music Theory for Violinists books 1-6 are designed to take beginners on the violin up to at least Grade 1 theory level 1. With clear explanations, plenty of repetition qand bags of fun, these workbooks give children a highly enjoyable introduction to music theory, relating to their instrument, and building confidence right from the start.