Song poem usually refers to song lyrics that have been set to music for a fee. This practice, which has long been disparaged in the music industry, was also known as song sharking and was conducted by several businesses throughout the 20th century in North America.
The business of recording song poems was promoted through small display ads in popular magazines, comic books, tabloids, men's adventure journals and similar publications with a headline reading (essentially) Send in Your Poems - Songwriters Make Thousands of Dollars - Free Evaluation. The term lyrics was avoided because it was assumed potential customers would not understand what the term meant. Those who sent their poetry to one of the production companies usually received notice by mail that their work was worthy of recording by professional musicians, along with a proposal to do so in exchange for a fee. The early 20th century versions of this business involved setting the words to music and printing up sheet music from inexpensively engraved plates.
In producing the recordings, musicians often recorded dozens of songs per recording session using minimal resources, often in one take. Some of the companies recorded new vocals over pre-recorded music backing tracks, using the same music tracks hundred of times. The recordings were then duplicated on 45 RPM vinyl singles or on individual cassette tapes, or they were released on compilation LPs with dozens of other songs by amateur lyric writers. Copies were sent to the customer. Promises that they would also be sent to radio stations or music industry executives were rarely if ever kept, partly because the recordings would not have been taken seriously by professionals.
Many of the lyrics involve subject matter relating to the passing fads of the day, and thus provide a window into a past pop culture.
In 2003, a documentary about the industry, Off The Charts: The Song-Poem Story, was aired on the Public Broadcasting Service in the United States. It has since been released on DVD, and the soundtrack was released on CD.