Complex sentence: On October 18,1975, the duo made an appearance on the second episode of NBC's new show "NBC's Saturday Night", on which they performed "The Boxer", "Scarborough Fair", and "My Little Town".
Split into simpler sentences: On October 18,1975, the duo made an appearance on the second episode of NBC's new show "NBC's Saturday Night". They performed "The Boxer", "Scarborough Fair", and "My Little Town".