Carlo Balmelli is one of Switzerland's best-known conductors and heads the Stadtharmonie Zürich Oerlikon- See- bach and the Konkordia in Egerkingen, which are excellent musical ensembles. Balmelli is also a lecturer at the Con- servatorio della Svizzera italiana. His extensive musical training began in 1986 with six years of study in Professor Branimir Slokar's trombone class at the Bern Conservatory. Later (1989-1992), also at the Conservatory in the federal capital, he followed the conducting course in Dr. Ewald Körner's class. In 1995, he obtained his professional diploma as a conductor of wind orchestras at the Conservatory of Lucerne in the class of Joseph Gnos. Since 2002, he has been the head of the Mendrisio branch of the Music School of the Conservatorio della Svizzera Italiana. At the Scuola Universitaria di Musica in Lugano, he has been teaching trombone since 2020. In 2022, he was awarded the prestigious Stephan Jaeggi Prize, Switzerland's highest award in the field of music.
Thomas Trachsel is a freelance composer whose catalogue of works includes more than 100 pieces of various instrumentations. The musical language in his works is based on the late romantic tradition mixed with contemporary elements. Typical of his style are melancholy movements and themes, large-scale arcs of tension, powerful outbursts of sound and extremely demanding orchestration. Thematically, he usually deals with the current problems of humanity. The question of being or not being usually plays a central role. On 10 February 2007, his First Symphony for Wind Orchestra was premiered by the Stadtharmonie Zürich Oerlikon-Seebach, conducted by Carlo Balmelli, at the Tonhalle Zürich. The performances of this work by the Stadtharmonie Zürich Oerlikon-Seebach at the Mid Europe in Schladming (Austria) and by the world-famous wind orchestra La banda Sinfónica de la sociedad musical La Artística Buñol, directed by Henrie Adams, in Spain brought Thomas Trachsel great recognition as a composer.