Learning to play a musical instrument as a child has enormous benefits and every child should learn.
There is a barrier however which is that you need a musical instrument.
Actually, virtually all school children have a musical instrument. It’s called a smart phone.
Brilliant Idea #310 is to develop a system of teaching all children to learn to play music on a free mobile phone app. It will become the recorder of the 21st Century, but unlike the recorded it will be Brilliant.