Music fans in 2003 mourned the loss of a country music icon, a Cuban salsa queen, a pioneering rock'n'roll producer, a deep-voiced master of soul, a unique jazz stylist, a member of one of pop's most

Music fans in 2003 mourned the loss of a country music icon, a Cuban salsa queen, a pioneering rock'n'roll producer, a deep-voiced master of soul, a unique jazz stylist, a member of one of pop's most successful trios and many others. Billboard takes a look back.