Extrinsic to a piece of music or outside the field of music.
非音乐所固有的；音乐领域以外的
his advice was to listen for the music—not for extramusical meanings
Example sentencesExamples
In Adès's music the seductive brilliance of his instrumental writing is often allied with extramusical subject matter which also has surrealist resonances.
As Richards states it, the book's intention is to ‘concentrate on the expressive and extramusical qualities of Ireland's music’.
Given that limitation, it's still good pop music, but we tend to judge the music by extramusical standards.
These, however, have more to do with the composer's extramusical commentary than with anything specific to the notes; one could argue that all music is spiritual.
Later in the work, other extramusical sounds - mostly human in origin - are introduced.