This is a belated farewell to Mike Zwerin (1930-2010), jazz trombonist and jazz correspondent for the International Herald Tribune.   An American in Paris, he was open in his musical tastes and usually generous in his criticisms; his IHT writings personally sustained many a long journey across far meridians, and helped reinforce the urbane, cosmopolitan, expatriate feel that the IHT had last century (now sadly lost, since the NYT bought out the Washington Post and brought it home to Manhattan).  Obits:  London Times and The Guardian.