Below NoLongerAvailable The so-called blue note is

The so-called blue note is the “flatted” or slightly lowered third and seventh in a major scale

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Below NoLongerAvailable The so-called blue note isOn what should be a routine rescue mission during World War II, the submarine USS Tiger Shark picks up three survivors of a U Boat attack. But for the crew trapped together in the sub's narrow corridors and constricted spaces the unexpected visitors seem to spark a series of chilling, otherworldly occurrences!