The Hypodermic Needle theory suggests that media like advertisements, magazines, and TV can subtly influence audiences' minds without them realizing it. Under this theory, fans may be unconsciously compelled to purchase a product just because it is associated with a media property they like. For example, magazines may use popular celebrities or bands on their covers to attract fans and influence them to buy the magazine without full awareness. Similarly, songs mentioned in commercials can subconsciously suggest to listeners that they should buy the advertised product whenever they hear the song later.