The cello is a very fine instrument - just ask Yo-Yo Ma - but it has some fundamental weaknesses. The most obvious one is that there's no way to play more than two of its four strings simultaneously.

Clean Bandit lit up London’s O2 Arena with their chart-topping, classical music-influenced electropop set. An all-female trio of musicians fronted Clean Bandit’s JBB performance; Kirsten Joy on vocals ...