Complex sentence: In 1917 the Dixieland Jass Band achieved great success with their recording of the instrumental "Livery Stable Blues" under the direction of Nick LaRocca; however, Nunez and Ray Lopez filed copyright for a sheet music version of the tune before LaRocca.
Split into simpler sentences: In 1917 the Dixieland Jass band achieved great success with their recording of the instrumental "Livery Stable Blues" under the direction of Nick LaRocca. However Nunez and Ray Lopez filed copyright to a sheet music version of the tune before LaRocca.