David Ellis . Contra-Partita is a major addition to the trio repertoire from one of Britain's most senior composers. Written in three extended movements, this is challenging, both musically and technically, and amply displays the potential of the advanced bass trio. David Ellis writes in a confident and strongly personal style, with much rhythmic momentum and impetus, allied to contemporary lyrical melodies and styles. This is a serious work to push the boundaries and requires three players of equal ability.. Performance Level: Advanced.. Grade: Advanced