PurplePlanet:PurplePlanetMysterySound.com is a sound site that offers a tax-free version of the sound effects website co-founded by Chris Martyn and Geoff Harvey, allowing users to use their music for free. their music for free. You can use their music for your own video work, but you must link back to their site in the description of the video. Their music style is horror, dramatic or mysterious scenes.