Trio Sonata for two clarinets and bass clarinet by John Harbison (b. 1938) - American composer I. Fast II. Fast III. Fast IV. Fast Harbison published two versions of his Trio Sonata; one for oboe, English horn, and bassoon, and the other for two clarinets and bass clarinet. The Trio Sonata for oboe, English horn and bassoon can be found HERE.To order the version for oboe, clarinet, and bassoon (Harbison notes that the sets are interchangeable for any trio combination), then you need to order both the version for oboe, English horn, and bassoon (at the above link), as well as the version for two clarinets and bass clarinet (this title). If this is confusing, please call or email us for further clarification. Duration: 5:00