You Light Up My Life has all the virtues and all the liabilities of a low-budget effort. There’s an earnest sincerity in the story of washed-up juvenile comedienne Didi Conn working out an adult identity. There’s also a lot of cutesy, cornball, convenient and compacted plotting.
As the burnt-out child of stage-father Joe Silver (both of them doing very well in characterization), she is headed for a dull marriage to Stephan Nathan when film producer Michael Zaslow sponsors her first breakthrough into the field of pop music. She falls for Zaslow, but his mind is on his own career.
Along the way, there are some ‘slices-of-life’ scenes involving the teleblurb business (whence came producer-director Joseph Brooks), Jewish weddings, and also interactions between Conn and the men in her life which border on treacle. Production credits are okay.