Complex sentence: The Tender Land is an opera by Aaron Copland (libretto by Horace Everett, a pseudonym for Erik Johns), about a farm family in the Midwest of the United States.
Split into simpler sentences: The Tender Land is an opera with music by Aaron Copland and libretto by Horace Everett, a pseudonym for Erik Johns. The opera tells of a farm family in the Midwest of the United States.