When two notes are an octave apart, one has double the frequency of the other yet we perceive them as being the same note – a “C” for example. Why is this? Readers give their take This question has a ...

The humble capo has graced the gig bags of performing musicians for decades, clamping down to change the overall key of a guitar in a single, swift motion. Now, a new take on the capo opens up whole ...