All art aspires towards the condition of music. Why? Perhaps it's because music is the only art-form which is non-representational. Music needs nothing but itself.
The Condition of music?
Emmanuel Kant dismissed music for this very reason. He called it enjoyment rather than culture.
It is important to note that not all music can be treated this way. Richard Wagner drew a distinction between abstract, or absolute music, which needed no themes or meaning whatsoever, and program music, which was thematic.
The quote at the top of this page comes from the Victorian art critic Walter Pater, who was commenting on the trend for pictorial arts to move from representational forms to more abstract forms. Music never had that need as music has no need to represent anything. What you hear is what there is.
This applies to the Beatles as much as it does to Beetheoven.
The rhythm of typography, the tonal shift of colour.
Why so many famous graphic designers started off doing music covers.
famous albums and their stories