Didactic piano album that features original work of Bohuslav Martinu, including pieces and material published for the first time ever, such as the four-part piano cycle "Crotchets and Quavers", composed in Paris in 1937 and devoted to changes of metre and tempo. The foreword available in three languages (CZ/ENG/GER) and fingering is produced by Lucie Harasim Berná. All pieces are in category easy to moderately difficult.