This leaves less room for practices, such as improvisation and ad libitum ornamentation, that are frequently heard in non-European art music (compare Indian classical music and Japanese traditional music), and popular music.
Hal ini membatasi adanya praktik-praktik seperti improvisasi dan ornamentasi ad libitum yang sering didengar pada musik non-Eropa (bandingkan dengan musik klasik India dan musik tradisional Jepang) maupun musik populer.