Tradition is often frowned on. Yet, if properly handled, it can be sheer fun and pure bliss, as demonstrated by the Bolshoi Ballet’s current season in London. Far from being museum pieces, the classics so far presented stand out for their vibrant and captivating theatricality. According to an enlightening note by Yuri Grigorovich, the father of Russian contemporary ballet, much of it depends on an approach that favours performance tradition over sterile philology.