Sir John Eliot Gardiner is one of the most versatile and exciting conductors of our time. Acknowleged as a key figure in the revival of early music, his concert performances and recordings are unmistakable for their zest and technical mastery. This fascinating film of Bach's Cantata No. 63 rehearsal at London's Abbey Road Studios is intercut with comments from the singers and an interview with Gardiner, giving a deeper appreciation of this festive work lavishly celebrating Christ's birth.