Grimm Brothers tale of a strolling minstrel in 1349 Germany who agrees to rid the village of Hamelin of plague-carrying rats is given a serious, perhaps overly-solemn treatment. Jacques Demy has directed the story in a straightforward fashion, without any humor or playfulness, mystery or beauty (with the exception of the sunrise-heightened finale). Pop singer Donovan is well-cast in the title role, and his music compositions are good even if his songs are not of the Medieval period. The other cast members--top-billed Jack Wild, Donald Pleasance and John Hurt--have very little to do; Wild, in particular, is forced to painfully hobble around with a crutch as an alchemist's assistant. Michael Hordern as Melius, who is unable to conjure a cure for the Black Death and is arrested for being a heretic, gives the picture's finest performance, though his final moment tied to a stake may prove to be too heavy for the movie's supposed 'family audience.' The dank, mildewy locations, period costumes and bedraggled extras all lend a convincing air to the film, but "Piper"'s downbeat nature (not to mention all those rats!) makes it a tough sell. ** from ****