Not an old warhorse, but offering something new each time, as one critic said of 23 year-old American composer Samuel Barber's masterpiece. Barber himself got a bit tired of its success, the price of peaking early.

Leonard Bernstein takes it slowly as he conducts the New York Philharmonic. Contemplation for a summer's evening.

It's that moment again, when you find out you haven't won a Fields Medal.

The International Congress of Mathematicians (ICM), held every four years, is in Philadelphia next week and you can watch with colleagues as we are streaming the opening ceremony in L3 from just before 2 p.m (when the medals are announced). As well as the Fields, there are other prestigious medals such as the Chern and the Abacus, so it's well worth a watch.

A leopard may not be able to change its spots, but a mathematician can.