Once the time machine was completed, I began work on the biggest wheeze in all of space and time.
The machine was built purely for profit: but not in a robbing-a-bank sort of way, no. I went back to 1954, armed with a copy of the entire Beatles songbook, with a view to recording them and making myself an absolute mint. 'Penny Lane', 'All My Loving', 'Hey Jude'...all written by me.
An unexpected thing happened. It seemed the world just wasn't ready for The Beatles' music yet. The songs bombed.
And in doing so, I ruined music history.