As they pre­pare for their 50th Anniver­sary Tour, Squeeze’s co-founders Glenn Tilbrook and Chris Dif­ford look for­ward to open­ing Glas­ton­bury Fes­ti­val when they per­form on the Pyra­mid Stage at mid­day on Fri­day June 28. Says Glen Till­brook: “I was at the 1971 Glas­ton­bury Fayre and it was a life chang­ing expe­ri­ence for me. I didn’t return…