What are the piano levels of Weathering with You?

Level 9-10. According to the query "Weathering with You", we learned that the piano repertoire is divided into ten levels, and Weathering with You is a piano repertoire for levels 9-10. The piano is a keyboard instrument in Western classical music. It is known as the "King of Instruments". It was formerly the harpsichord. It consists of 88 keys (52 white keys, 36 black keys) and a metal string soundboard. It is produced in Italy. Bartolomeo Cristofori invented the piano in 1709.