The artist Mucha is usually pronounced “MOO-kha” in Czech, with the ch sounding like the raspy sound in German “Bach” or Scottish “loch”.

In English

Many English speakers say “MOO-chuh” or “MOO-kuh,” but those are approximations rather than the Czech pronunciation.

For Alphonse Mucha

If you mean Alphonse Mucha , the common guide is “AL-fons MOO-kha”.