Full of thrills and chills, “Witching Hour” is a spooky soundtrack with sneaky undertones. The song opens with a busy mix of eclectic instruments and paranormal sound effects before downshifting to a jazzy arrangement in 3/4 time. Then, after a blood-curdling scream, the tune returns to its mischievous motif.

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Rev up your project with “Checkmate.” Dueling guitars and driving drums give this high-energy rock song its forceful, rabble-rousing sound.

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Though it starts with a somber chord progression, “Foreign Body” ultimately launches into an exhilarating electronic arrangement. Give your project a jolt with fast piano arpeggios, oscillating synthesizers, and a danceable drum beat.

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Crisp acoustic guitar, carefree banjo, and dynamic percussion give “Wonderland” a strong, sunny sound. Try using the friendly tune to brighten your next project.

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Lean and mean, “The Shallows” will make your projects more lively. The short but intense rock tune features distorted guitars, fuzzy bass, and meaty drums.

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Take your project to that formless place between wakefulness and sleep with this soundtrack of unreality. “Was It All a Dream?” features a warbly synthesizer, mechanical Mellotron strings, and other curious tones. Though most of the song follows a neutral melody, things end on a darker note as the arrangement fades into oblivion.

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Finger-picked acoustic guitar and soft piano make up this simple, rustic tune. Following an ABAB song structure, “Morning in the Calla” will bring a gentle energy to your project.

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Want to give your project a sense of grandeur? Comprised solely of a small string ensemble, “Outside of Time” is a compelling classical composition with two distinct, passionate movements.

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What do you get when you mix a bold beat, flute, and Transformer sounds? The laid back yet eclectic tune that is “Thanks for Playing.” As a seamless loop, this track will accommodate a wide range of projects.

Pro tip: On a mobile phone? Song downloads work best on a computer.