Earworm ...

Warning - I'll not be held responsible if you're still singing this classic 60's song in a month's time ….
https://www.youtube.com/watch?v=Bj40JtpqI0U

https://www.youtube.com/watch?v=Bj40JtpqI0U
http://www.gripsky.co.uk/vocalvoices/
http://www.gripsky.co.uk/vocalvoices/viewtopic.php?f=2&t=14330