Sequenza XII
Sequenza XII is a composition for solo bassoon, written by Luciano Berio in 1995 , and part of a series of fourteen "Sequenze" composed between 1958 and 2002. The work was written for, and dedicated to, the French bassoonist Pascal Gallois, who gave the world première on 15 June 1995. "Sequenza XII" is the longest of all the "Sequenze", at nineteen minutes. As with the other works in the series, it reflects Berio’s fascination with virtuosity, "understood not merely as technical dexterity, but as a manifestation of an agile musical intelligence that relishes the challenge of complexity" . In  Sequenza XII Berio makes deliberate use of the different registers and explores the physical limits of performance through extended techniques, for example, through different uses of the tongue to modify airflow, by writing notes and phrases that are so long they require the performer to use circular breathing, the use of "glissando", and multiple sounds producing by singing through the instrument while playing (; ).