Simplify the following text for a Grade 11 native English-speaking person.
Original: In the Baroque era , and generally called a Serenata ( Italian `` serenade '' -- since this form occurred most frequently in Italy ) , a serenade was a type of cantata performed outdoors , in the evening , with mixed vocal and instrumental forces .
Simplified: In the Baroque period a serenade was a type of cantata performed outdoors , in the evening , with singers and instrumentas .