Create imagery from a favorite song on an index card. When you listen to that song, what do you see? For example, when I listen to a particular Shakira song, I see purple velvet draperies swaying as a backdrop to the song. This is my interpretation. Pick a song, think about the colors or textures that you see when yo hear the song. Something that in your mind would "match" the flow of the song. And create a texture or page with that color or theme.
There's a song by Enya that I like to envision with long narrow blue and white ribbons unfurling and swirling in the wind.
This is so absolutely not scientific.
There isn't any RIGHT. Ignore your analytical side while you paint, just try to match a feeling to a page.
Find ALL of the prompts at this link: Daily Paper Prompts