Thanks to John Baez, Jennifer Brehl, Caroline Oakley, Anthony Cheetham, John Douglas, Simon Spanton, Oisín Murphy-Lawless, Devi Pillai, Peter Robinson, Russell Galen, Carol Jackson, Emma Bailey, Diana Mackay, Philip Patterson, Christodoulos Litharis, Nicola Fantini, Giancarlo Carlotti, Albert Solé, Petr Kotrle, Makoto Yamagishi, Florin Pîtea, and Mihai-Dan Pavelescu.