These concert duos composed in a very short time, having a unique source of inspiration for each piece. They were named after being composed, according to the natural phenomenon that inspired it. At the

KEYS In this volume, exercises for the keys are provided. Though less in demand, it is required in a few institutions. Here, there is detailed work on the keys. Each note symbol is dealt with and a more

INTONATION INTERVALS The exercises (complete musical phrases) are composed specially for each interval and are designed to develop strong intonation base. They are presented individually from small to large