Was the song that you wrote that made no sense when you were outside the brooklyn museum 'brooklyn museum', or is that line from 'brooklyn museum' about writing another different song, or is it a fictional story?
it's a true story, but most of those bits got ironed out and adjusted several years later to actually make them more true. the 'i just wrote a song' song originally did not mention 'no sense' nor the 'brooklyn museum' but the later re-write of 'i just wrote a song' did mention those things, which were true