Serenade is a kind of music genre, which is used to express love to the beloved. Serenade is usually a song sung at dusk or night, but it also includes love songs sung at the lover's window in the morning. Serenade originated from medieval knight literature in Europe and spread in European countries such as Spain and Italy. At first, a young man serenaded his lover's window at night and poured out his love. The melody is beautiful, euphemistic and lingering, and he often accompanies it with guitar or mandolin. With the development of the times, its forms have also developed. The serenades created by Schubert and Tosini published in Famous Songs at Home and Abroad are widely circulated all over the world.