'A' is for Alabama ... or is it for Aldean, Allan or Autry? 'B' could be for Brooks, but what about Brooks and Dunn, Black or the Bellamy Brothers? This list of 26 country superstars decides who the king or queen of each letter of the alphabet is. A few are easy (can anyone name two 'Q' artists?), but others like the letter 'C' ... that's a debate that is only beginning.