Jack DeJohnette Instagram – It is with a heavy heart that we mourn the loss of one of our dearest friends, John Cummings, well known for London based Serious Productions, producers of many festivals and shows. John raised the bar as a promoter, developer of artists and all round visionary in music and the arts. Working with him was always a pleasure and full of laughs. He was one of the most caring and generous people we have known. He will be greatly missed by all those who have been touched by him but mostly by his loving and close family, Ginnie & Kate, our hearts go out to you both. Both Lydia and I are honored to have John and his family as our friends. We hope everyone can find peace during this unsettling time in all our lives.