Would an earworm do?
In the jungle the mighty jungle the lion sleeps tonight.
Weeeeeeeeee-ooo-oooo-weeee-ooo-ooo-wee-oo-bom-bolay
That should be good for a few hours.
Thanks but I’ve had an earworm of my own for four days now — Santa Lucia. CFIDS gets them and doesn’t like to let go. I’ve had some that lasted a week.