Series of books named Music theory Klíček is aimed to teach a complete faudation of music theory. In the publications are the themes explained and enriched by practical examples and excercices.
These books are for use in music schools, primary and seconday schools and lower grammer schools. The first part of Klíček contains: notes, rests, octaves, treble cleff and bass cleff, sliders, major sharp scales, musical intervals, dynamic, simple signs in notation, takt times, major scale with one flat.