1950s: Elvis's unique style of music and sexually suggestive gestures and dance techniques send shockwaves through mainstream America, and many repressed teens rush to emulate him.

1980s: Michael Jackson, one of the members of the childhood Motown group, the Jackson Five, achieves superstardom for his innovative musical stylings and dance techniques. At the same time, a singer who goes by the name of Madonna becomes popular, in part due to her sexually suggestive singing and music videos.

Today: The popular music scene is one of crossovers. Rock bands borrow from country, alternative, or rap stylings, and vice versa. Regardless of genre, most types of music recognize the sales power of sex, and generally feature some sexually suggestive stars.

1950s: The popularity of and need for horn players in night clubs slowly declines.

1980s: Horn players are a novelty, and some of their old venues...