Are singers musicians?

So then, technically speaking Johnny Rotten is a musician?

OMG, I just realised that given our definition, that, and I can't believe I am saying this, but Yoko Ono qualifies as a, (excuse me while I throw-up!).... musician.

Man, does that leave a bad taste in my mouth!
Yuch!

What on Earth is the point of asking such a question, and what on Earth makes you suppose there is a "technical" sense of "musician" that determines the answer, or that anyone should care about?

There are musicians, and some are professional, others amateur. Some musicians are great musicians, others are merely good, and then there are bad, very bad, and awful . . .

Maybe there's a spot in there for Yoko, and Johnny Rotten

I remember when the local authority (city hall) received a noise pollution complaint about Ms Ono's piano playing, I thought to myself at the time that I would not complain about her piano playing, but only when she started to sing,lol.

Johnny Rotten's voice is ok, I mean when he sang in his group P.I.L he fitted the songs well, and they were really good songs to!
Perhaps there is a spot for Bob Dylan, like after ...awful....

I am sure when a 'singer' needs to right on a form 'occupation', that do indeed (and quite correctly) put musician as their occupation as opposed to something like
throat warbler..............