Playing painlessly is like holding your nose when you swallow something you expect to taste awful. But what if you are holding your nose all the time?
The best image for playing painlessly remains Milt Gross's brilliant solution to King Midas breaking his teeth when he chewed his peas: He had a vassal stand in the corner with a pea shooter to shoot the peas directly into his gullet so that he could swallow them without chewing them.
If you do an Internet search for Nize Baby you will find some lovely peas on which to chew.