The bulk of listening is on FM -- about 80 percent of the listening audience listens to FM. The remaining 20 percent listen to AM.
If you look at the ratings for most American cities, you'll find one AM - usually a high powered one near the top of the general 12-plus ratings - with a non-music type format (news/talk/sports).
AM is more and more turning into the home of specialty programming: "foreign" language stations (Chinese, Korean, Spanish), leased access (pay for your air slot) and religion.
