Complex sentence: During its composition, Weber designated the work as a sonata, but abandoned that title upon its completion, reflecting its character as more of a dramatic showcase for two virtuosos than a conventionally structured and integrated work.
Split into simpler sentences: During its composition, Weber designated the work as a sonata, but abandoned that title upon its completion. This decision reflected the work's character as more of a showcase for two virtuosos than a conventionally structured and integrated work.