The Puertas Quartet is a string ensemble made up of two married couples who live 12,000 miles apart. Their second CD, Ravel Rachmaninov Tchaikovsky, will be released this month, and they are embarking on a tour of New Zealand from January 11. Two of the group's members, violinist Tom Norris and cellist Andrew Joyce, stop by for a chat about their own musical histories, and the dynamics of playing in a string quartet (with your spouse!). The CD will be released on Atoll records.