I had discovered before we arrived that Paraguay has a delightful musical tradition.  It is based on the country’s individual version of the harps that were introduced to South America by the Spanish in the sixteenth century.  I thought that, used properly, it could give the series an individual character.  Happily, we found and recorded a splendid group of three harpists and five guitarists, who played all the standard Paraguayan dance tunes and folk songs with great panache.  One melody was particularly catchy.  It started with an imitation of the call of Paraguay’s national bird, the bellbird.  That, I decided, we should use as our signature tune.