Purdue University researchers have developed a bass-loving device that might help people dealing with aneurisms or incontinence due to paralysis.
Music featuring frequencies of 200-500 hertz (the range known to grandmas as the one that "hurts your ears" - see the second video below) causes part of the device to vibrate, and energy from that vibration can be captured, stored and used later to power a sensor that could help monitor medical conditions.
The researchers tested rap, blues, jazz and rock. "Rap is the best because it contains a lot of low frequency sound, notably the bass," said Purdue professor Babak Ziaie.
The only problem? Trying to convince elderly people stricken with the aforementioned health issues to listen to bass-heavy music:
This granny is already convinced: