Which movie genre did both Alexandre Aja and Roy Andersson direct movies in? 
Roy Andersson:  "Songs from the Second Floor", more than any other, cemented and exemplified his personal style – which is characterized by long takes, absurdist comedy, stiff caricaturing of Swedish culture and Felliniesque grotesque. Alexandre Aja: Alexandre Aja (born 7 August 1978) is a French film director best known for his work in various horror films.
Alexandre Aja (born 7 August 1978) is a French film director best known for his work in various horror films.