The aim of the book is to proactise the horn's low register at different difficuly levels. The etudes use different styles with a strong rhythmic component and some extended techniques. Includes: Etude for Pedro; Blues in F; Ostinato; Prelude; The Finger; Whoe Tone Riff; Welcome to Rio; Blues in G; Ploc!; Diabolus in Musica; Asta su Abuelo; Tribute to J.S. Bach; Interupted Sneeze; Legato Walz; Slow Funk.