Simplify the following text for a Grade 9 native English-speaking person.
Original: The old text was replaced with the new text `` Ridente la calma '' , KV 152 ( 210a ) , in a scoring for soprano with piano accompaniment .
Simplified: Mozart changed the words and wrote `` Ridente la calma , '' KV 152 ( Kâ 210a ) for soprano with piano accompaniment .