Psychiatrist and plagiarist Raj Persaud takes today's talk on How to Be Happy. St George's, Hanover Square, 2A Mill Street, W1S. 1pm, £Free

The Baroque ensemble get together to perform a bit of Parthenia at Wesley's Chapel, 49 City Road, EC1. 1.05pm, £Collection

Strings duo Peter Neville (cello) and Wendy Brook will be accompanied by pianist Miriam Nendick at St Martin Ludgate, Ludgate Hill, EC4. 1.15pm, £Free

Calling a series of organ recitals International Celebrity Series is slightly misleading when the "celebrity" in question is a Professor in church music. Still, if this is your thing it's bound to be better than usual. The St Margaret, Lothbury, EC2. 1.05pm, £Collection

The Babylon exhibition opens this weekend at the British Museum, be the first to see it and get the inside track with a curator's talk at The British Museum, Great Russell Street, WC1. 1pm, £Free