Maria de Buenos Aires – Piazzolla’s Tango Opera – 6 dates in May and June 2106 – The Vaults, London. Fans of Astor Piazzolla and Tango will be pleased to hear that his opera is returning to London for 6 dates in May and June. It’s quite rare to see this performed so here’s your chance to see it and even participate in a bit of tango dancing after the show!