Songs have this effect. Start a song and some thoughts start pouring in. Start writing immediately and put the song on loop lest you want your thoughts to start wandering and five more drafts of posts, incomplete.
When songs are this effective, I wonder why we even bother to collect tens of people and give a lecture. We could just give them a song each, instead of writing books and blogs about what we want people to understand. I see a big irony here.