To relax, we sometimes flick through the stations on Songza, usually tuning into recommendations of mellow and ambient music for reading and meditation. It’s a bit of a chore trying to figure out what music our head is craving, but now there’s promise of a device that could potentially do that all for us. The Melomind, by MyBrain, is an EEG headset that tracks a person’s brainwaves, then measures stress and plays music to calm them down. It takes only 15 minutes to bring their stress to a comfortable level, the company claims – that’s double the time it takes to smoke a cigarette, but (hopefully) without the negative health impact and financial burden (the cost is about the same as smoking a pack a day for two months).