12-12-11

Here is a very comprehensive guide on understanding Music radio formats , so you will best know what types ( classifications) that best fit Susan ....

http://www.nyradioguide.com/formats.htm

Here is the parts related to Susan I am copy/pasting now .

Lite Adult Contemporary
(Lite AC)


A station playing particularly easy-going popular and rock music released during the past fifteen or twenty years designed to appeal to general listeners. This format is the descendent of the not-quite-extinct "Easy Listening" format of years past. See AC andHot AC.

Hot Adult Contemporary
(Hot AC)
A station which plays commercial popular and rock music released during the past fifteen or twenty years which is more lively than the music played on the average Adult Contemporary station, but is still designed to appeal to general listeners rather than listeners interested in hearing current releases. 

Another definition of "Hot Adult Contemporary" used in the radio industry is an Adult Contemporary station which plays a significant amount of new rock/pop releases. There is no strict rule as to how much new material a station needs to play in order to be considered "CHR" rather than "Hot AC". 

To confuse matters further, you will often see an "Adult Contemporary" music chart, which tracks current songs which appeal to adults but are more pop-oriented than songs found on the "Adult Alternative" chart. 
Billboard Magazine also compiles an "Adult Top 40" Chart, which tracks rock singles and album cuts which appeal to an adult audience.
This chart reflects airplay on rock-oriented CHR stations as well as the new release airplay component of Hot AC stations. See AC, Lite AC, and Rock AC

Contemporary Hit Radio
(CHR)
A station which plays a significant amount of current popular music, whether singles or album cuts. 
As it is no longer unusual for a single to remain on the charts for 30-40 weeks or longer, "current" refers to music released within the last year.
A more accurate description for "CHR" would be "Current Hit Radio". This format is the descendent of the Top 40 stations popular from the 50's through the 80's. 

Although some CHR stations base their playlists on surveys of local record sales or phone requests, most rely on published charts such as the Billboard Hot 100. As of December, 1998, the Billboard Hot 100 chart began to include popular album tracks not commercially released as singles, and began weighing a song`s airplay three times as heavily as a song`s sales.
The Billboard Hot 100 chart is therefore a measure of which songs are being played on CHR stations which, in turn, base their playlists on Billboard`s Hot 100 chart. 

Contemporary Hit Radio stations tend to concentrate on specific music styles, such as Rock or Urban, or a range of styles, such as Rock/Pop/Dance or R&B/Rap/Dance. 
Some CHR stations play a significant amount of hits released during the past ten or fifteen years, particularly if there are insufficient current hit releases which fall within the station's stylistic range

Adult Contemporary (AC)

A station primarily playing popular and rock music released during the past fifteen or twenty years, designed for general listeners rather than for listeners actively interested in hearing current releases.
The playlists of many AC stations will also include a limited selection of older material and current hits. See Lite AC, Hot AC, and Rock AC.

Adult Alternative (AA)

A station which plays current hits, whether single releases or popular album tracks, which tend to appeal to adults more than to teenagers.
Playlists are drawn from rock, pop, country-rock, folk-rock and blues releases. There are no stations of this type in the New York area.


So different songs of Susans could fit all these different formats .....