Lull
This is a kind of pop lullaby. Once when my partner’s grandson wouldn’t stop crying she suggested I play the accordion to see if we could get him to sleep. I was skeptical of a successful outcome but amazingly, it worked.
photography © Alex Ramsay
john hymas 
Loved it. Well done.
John, we could do with you on call some nights!
That’s given me a good employment idea. Official lullist (to the rich and famous)!
(there doesn’t seem to be a word for one who lulls)