Mice do it, cats do it,
Little tramps in bowler hats do it,
Let’s do it! Let’s join the public domain!

Cole Porter’s song “Let’s Do It” is well-known, but now rarely sung with its original lyrics. Porter later approved the more familiar “Birds do it” start, replacing one that had ethnic slurs.

The “birds” version will stay copyrighted for a while, but in 23 days the song’s original copyright ends. Then, as in my example rewrite here, we can do it however we like. #PublicDomainDayCountdown