Graham Kendrick is a prolific songwriter and worship leader whose music is sung by churches of every kind across the world. He celebrates his 70th birthday this weekend. From his early career travelling by motorbike to play folk rock at church cafes across the UK he went on to leading tens of thousands of people at worship festivals. Along the way he produced perhaps the best known contemporary worship song, Shine Jesus Shine, and a huge number of others - more than 40 albums over 50 years. Long recognised as one of the key figures of the contemporary Christian music scene, he’s been described as its equivalent of Eric Clapton – though with nearly twice as many albums to his name. Roy Jenkins talks to Graham about his music and his life.