Comment Re:Dear republican candidates (Score 3, Informative) 452
ASCAP/BMI/SESAC licensing fees cover public performance of a copyrighted work, which includes playing the recording in a bar, a cover band playing the song in a venue, playing the recording over the radio or on television, etc. The intention is to funnel some of the money that the venue is earning from playing your song back to the artist. These amounts tend to be relatively small, but prevent situations where radio stations, say, can make tons of money off of advertising around your song without paying anything at all to the artist.
Using a copyrighted work within another work is something else entirely. "Another work" might refer to a stage play, a television show or film, an opera, and sometimes a staged presentation or demonstration. Those rights are called "grand rights" in the case of stage works and "sync rights" in the case of television or film and are not handled by ASCAP/BMI/SESAC. So, in cases where music is being used WITHIN THE CONTEXT OF ANOTHER WORK, explicit permission needs to be given by the copyright holder. The idea here is that, if Real Housewives of the OC wants to use your music as the opening of their show, they have to work it out with the composer/publisher and actually pay for that use.
Now... whether or not a political rally qualifies as a "dramatic work" is up for serious debate and is a question best left for a copyright lawyer. In the case of a television commercial, that is definitely something where explicit permission would need to be granted to use the song.