Simplify the following text for a Grade 7 native English-speaking person.
Original: Several examples exist from the 20th century , including works by Nikolai Medtner , Ferruccio Busoni , Vincent Persichetti , Sergei Prokofiev , BÃ la BartÃ k , Benjamin Britten , Gordon Jacob , Lennox Berkeley , Gareth Walters , Malcolm Arnold , Lars-Erik Larsson , Bohuslav MartinÅ and Igor Stravinsky ( from his ballet to music of Tchaikovsky Le baiser de la fÃ e ) . JoaquÃ n Rodrigo also called his 1982 cello concerto a `` Concierto como un divertimento '' ( `` Concerto like a divertimento '' ) .
Simplified: There are a few examples from the 20th century of pieces called `` divertimento '' , e.g works by including works by Ferruccio Busoni , BÃ la BartÃ k , and Igor Stravinsky ( from his ballet Le Baiser de la FÃ e ) .