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Songs of the same or similar color sound great together very different colors will be more jarring when played back to back. The hallmark feature of beaTunes is its ability to analyze your music and display BPM, musical key, and ‘color’, which is analogous to the mood of the song. Its interface has a distinctly Apple vibe with its familiar 3-pane setup making it easy to navigate, but it’s dotted tastefully with with helpful, colorful information throughout.