Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: The marriage was not entirely happy although it inspired some of Moeran's masterpieces, the Cello Concerto and Cello Sonata.

The marriage was not completely happy. However, it did inspire some of Moeran's masterpieces, the Cello Concerto and Cello Sonata.