Simplify the following text for a Grade 8 native English-speaking person.
Original: Born Oscar-Arthur Honegger ( the first name was never used ) in Le Havre , France , he initially studied harmony and violin in Paris , and after a brief period in ZÃ 1\/4 rich , returned there to study with Charles-Marie Widor and Vincent d'Indy .
Simplified: He studied harmony and violin in Paris until his parents moved to ZÃ 1\/4 rich , Switzerland , when he studied at the Conservatory there . He then went back to Paris to study with Charles Widor and Vincent d'Indy .