Complex sentence: In the late 1920s Richard Strauss began working on a revised version that premiered in 1930 with a new German libretto, by Lothar Wallerstein that was partially a translation of the original Italian libretto, but with some changes to reflect the rearranging of the music.
Split into simpler sentences: In the late 1920s Richard Strauss began working on a revised version that premiered in 1930. This new version included a new German libretto by Lothar Wallerstein that was partially a translation of the original Italian libretto, but with some changes to reflect the rearranging of the music.