Watching JAM SESSION, the big question that comes to mind is why on earth did it take ANN MILLER so long to break into A-films and become a big musical star? She had pep, verve, charm, an overload of personality and those twinkling dancing feet. She plays a girl with aspirations for becoming a Hollywood movie star, even breaking into studios to pretend being secretary to handsome JESS BARKER, or onto movie sets to watch a musical number being filmed while she watches from the sidelines.
The big drawback is that Ann doesn't get to do her own "Victory" dance routine until the final five minutes or so. Then she gets her big production number with a sizzling routine that ought to have convinced MGM to take her away from Columbia much earlier than they did.
Several popular bands and band singers of the day are featured in a thin plot that has the usual predictable ending for these sort of show biz stories. For fans of 1940s nostalgia, there are The Pied Pipers with Jo Stafford, Nan Wynn, and bands like Charlie Barnet, Glen Gray, Alvino Ray, Teddy Powell, etc., all squeezed into the running time of this Columbia B-film with Ann Miller in the lead.
A pleasant diversion, the sort of programmer Miller was featured in more often than not.