Watch Oh Happy Day for Free: How to Stream the Movie Online at 123Movies. . Hannah (Lotte Andersen) is a housewife in a village Zealand, where she is married to the sad Carsten (Mikael Birkkjær). She sings in the mammal church choir along with his outspoken sister (Ditte Gråbøl). A choirmaster in transit - the black Jackson - get fired up during the chorus, as soon singing and joy - and Hannah is experiencing new feelings.