One of the biggest multi-arts festivals in the county is back for its 40th anniversary. With a stacked programme of live music, comedy, family theatre, talks and guided walks, this year’s Canterbury Festival boasts one of the event’s biggest line-ups to date. The two-week festival opens with an evening of live music from Tenebrae, a choir who are performing Joby Talbot’s Path of Miracles at Canterbury Cathedral, and indie-pop band The Feeling. The group, fronted by Everybody’s Talking About Jamie composer Dan Gillespie Sells, are best known for songs such as Fill My Little World and Love It Wh…