No major rules, just make sure that all content is music related.
First thing that came to mind for me was Porter Robinson - Lionhearted ft. Urban Cone, at least musically. I don't know many songs that use a talkative style of singing, if that's what you're after.
Yeah I have heard a lot of Porter Robinson's stuff before. It was really that NPR announcer in conjunction with the Jazz/André 3000 that has me so addicted to the sound.