Re long concerts (‘They’re an endurance test!’ Will Taylor Swift begin the era of the three-hour concert?, 23 March), I recall Leonard Cohen’s gig at London’s 02 Arena in 2013. He played for more than three hours, around 30 songs, with no costume changes – just a few doffs of the hat. He was 78.
Graeme Evans
Highgate, London
• Anyone finding a three-hour concert a bit long should probably avoid Max Richter’s Sleep – it’s 8.5 hours, and worth every penny.
Alan Wilkinson
St Albans, Hertfordshire
