In the '60s, parents were told to let their teens rebel, explore their boundaries. Increasingly the same message is being given to the parents of tweens.
Most people are really stunned to find out that the technology has been around for more than 100 years, and that the diesel engine was in fact invented to run on vegetable oil.
They're not particular about whether you're playing a flatted fifth or a ruptured 129th as long as they can dance to it.