I used to think that all music was made by this one big guy, (who in my mind looked something like Danny Devito) who wore a blue and orange vertical-striped polo shirt. He sang every song, and did the instruments for every song. I have no idea where that thought originally came from.
A childhood belief about songs

others believed things like this
- I thought Marco Polo was a kind of shirt.Anon
- I thought Marco Polo was Irish.
Mark O'Polo.— Claire Sparkes - You know the eifel65 song "Im blue da be da ba di"
I thought he said "I'm blue I'm in need of a guy"— Anna - If a man wore his shirt out, I thought his wife was going to have a baby.Anon
- i thought I got one year older when my family sang the birthday song.— I am the ghost
- The song "Reverend Blue Jeans" turned out to be "Forever in Blue Jeans." Who would have believed that?— music lover