The focus of this series is on the language of instrumental music currently performed in Brazil, based on elements of modern improvisation. Each volume contains two CDs with seven pieces of music, which are presented in the following versions: full versions; without melody / solo part; without harmony, without bass; without drums. Each book contains the scores in the form of lead sheets in four different versions: in C, Bb, Eb, and bass clef. Instrumentation: melody instruments