Gadgets & Gizmos: AI music & voice separation, boosting pain relief & the sound of a black hole

Steve Caplin marvels at a website that will separate out voices and instruments giving you ready-made karaoke. He reveals that pain relief works better lying down, but only on one side and discusses a beautiful and nippy submarine, a limited edition Bugatti, an 87mph electric unicycle, clever rear bike lights and NASA's revelation of the sound of a black hole in the Perseus galaxy, 240m light years away. Learn more about your ad choices. Visit podcastchoices.com/adchoices