It started off as this little joke and ended very grandiose...

It started off as this little joke and ended very grandiose kind of like the theme from 'The Muppet Show,' kind of how that was humorous but it was supposed to be very grand at the same time, very operatic, ... When everyone came back, Billie heard it and he was like, 'Oh, my God. That sounds so fun. I want to do one.' So he did one. He connected it to mine. ... We just kept playing musical hot potato.