Music features: soothing, easy to hum, melodious music. For example, Beethoven's Moonlight and To Alice. Secondly, music features: songs with obvious rhythm changes. For example, Mozart's Variations on a Little Star. Third, musical features: multi-elements, strong variability and strong plot. Finally, the characteristics of music: lively rhythm, upward tone, simple music and many repetitions. Such as Liszt's Dream of Love, Schubert's Serenade and Vivaldi's Four Seasons. In order to make children smarter, it is very important to let children have various abilities. The above music recommendations will stimulate children's brains in different ways and make them smarter.