“Song Sung Blue” (** out of four) was a one-note musical biography about the true story of Lightning & Thunder (Hugh Jackman and Kate Hudson) who in middle-age started performing as a Neil Diamond tribute act and became one of the biggest cover bands/tribute acts of all time before heartbreak and tragedy cut their musical odyssey short. Both Jackman and Hudson work well together and do their own singing but film never shifts into high-gear and remains earthbound. Hardcore Diamond fans may like this a little better. Disappointing result from writer/director Craig Brewer who made the much more potent “Hustle And Flow” back in 2005.