Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Early Argento, and it's well worth the wait...

Well alrighty! It took almost 4 decades to catch 4 Flies, but here it is! This is a very solid conclusion to Argento's Animal trilogy. It just might be my favorite of the three.Roberto is an up-and-coming musician. One night he confronts a stranger that had apparently been stalking him. There's a bit of a struggle, an accidental murder, and someone watching with a camera. Ohhh snap, let the mind games begin....FOUR FLIES ON GREY VELVET is classic Argento stuff--atmospheric, suspenseful, clever camera shots, dark humor, creepy music, plus some stylistic, high-impact violence & blood splatter. It all builds up into one heckuva interesting and layered giallo like only Dario can deliver.