> Without having deeply researched the piece, I wonder if 639 years was chosen with any relation to Tesla's 3–6–9 idea. From http://news.bbc.co.uk/2/hi/enterta

> Without having deeply researched the piece, I wonder if 639 years was chosen with any relation to Tesla's 3–6–9 idea. From http://news.bbc.co.uk/2/hi/entertainment/2728595.stm http://news.bbc.co.uk/2/hi/entertainment/2728595.stm > They settled on 639 years because the Halberstadt organ was 639 years old in the year 2000.