Puzzle for October 28, 2008

Sirius Radio is celebrating a "Frightfully Festive Halloween" this year on "Scream 113." The channel features spooky songs and sound effects and Halloween stories from Sirius stars and runs through November 2.

Listening to an hour yesterday, I found a story that ran for 12:40 (twelve minutes and 40 seconds), three :30 (30 seconds) promos for other Halloween programming on the satellite, and a 3 minute, 45 second summary of Halloween treats from Martha Stewart. All that was followed by 6 "Halloween themed" songs and spooky sound effects which lasted 20:15. That was followed by three :30 promos and a 12:15 ghost story which was followed by another 3 30 second promos and the hour ended with music.

How much music played during the hour? What was the ratio of music to everything else?

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