The “Doobidoo for Two” duets are the result of a collaboration between the composer Otto M. Schwarz and the trombonist and composer Leonhard Paul. Leonhard Paul is known the world over as one of the creative minds behind the ensemble Mnozil Brass. He studied music pedagogy and jazz and is now a lecturer at the University of Music and Performing Arts Vienna (MDW). This book contains duets in various styles, often equipped with ironic instructions. The duets are available for two trumpets, two horns, two trombones, two euphoniums in bass clef & treble clef, two tubas, along with versions for euphonium & tuba as well as trumpet & trombone.