The Amor-Belhôm Duo Bid Farewell To The Old Pueblo For The Summer. By Lisa Weeks THE AMOR-BELHÔM Duo claim they came to Tucson for the space, the inspiration and the freedom of the desert. Since their arrival last November, they've lived in Tucson for stretches of a few months at a time, working on their music with determined purpose. Their Tucson debut was, appropriately enough, on New Year's Eve at the Airport Lounge, opening a bill headlined by Al Perry. The Duo have since slipped neatly into the local music scene, expanding and enriching the dimensions of Tucson's musical