Complex sentence: Strauss continued to include the music from the love scene in his orchestral concerts and he revived the opera with 6 performances in the 1922 season at the Vienna Statsoper.
Split into simpler sentences: Strauss continued to include the music from the love scene in his orchestral concerts. Correspondence, pages 80-81 and Strauss with 6 performances in the 1922 season at the Vienna Statsoper.