Hi, Stairway To Heaven is the most famous song I know where "here's to my sweet satan"... " was added in reverse to the song. At the least, this has increased sales because people buy the record just to hear what all the weebee jeebee buzz is about. Adding low end bass also has an effect. Increasing certain frequencies can stimulate us in different ways. I know some do this with images in advertising. Graphic artists insert certain words or even sexual content that is hidden, however, it is picked up with our subconscious eye or mind. Can taboo messages or inserting audio tricks like these into music actually increase sales or popularity? What are your thoughts on adding subliminal audio messages or effects into recordings?