Simplify the following text for a Grade 7 native English-speaking person.
Original: The Piccolo Coro dell ` Antoniano ( English : Little Choir of Antoniano ) is an Italian children 's choir of Bologna created by Mariele Ventre in 1963 in Antoniano Institute to sing together with little kids at the Zecchino d'Oro festival , opened only five years earlier .
Simplified: Piccolo Coro dell ` Antoniano is Italian choir of children . It was created in Bologna in 1963 by Mariele Ventre .