The next season of a cathedral’s free lunchtime concerts have been announced. Southwell Minster presents free concerts by both local and national musicians every other Friday throughout the year. Between now and Christmas there are six events to look forward to, starting with The Nottingham Chamber Wind Ensemble on September 20. On October 11 there will be a performance to celebrate the tenth anniversary of the establishment of the Eric Thiman Collection at the Minster — an archive of about 1,200 of Thiman’s compositions. The concert will be performed by the Eric Thiman Singers, and the Junior…