My brother has a band with some friends, and a week or two ago they were rehearsing and disagreed about a chord progression in a Santana song.

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Mr Stevenson said the government also intended to build a rail link between the Fife and Edinburgh - Glasgow routes, known as the "Dalmeny chord", allowing trains from Scotland's two largest cities to stop at the new airport station.

BBC: Passenger boarding a train

In the third movement, for example, the setting is rather odd, with the two top parts playing repeated notes in a slow tempo, whereas the bass line and the chord progression are slow with very little motion.

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The prospect of peace in the Middle East strikes a personal chord with the violinist, who, while born in Jordan, is the son of two Palestinian refugees.

CNN: The orchestra playing for peace