Double Exposure’s “Ten Percent” was the first commercially available 12-inch single.
The song was recorded by the Philadelphia disco group Double Exposure and released by Salsoul Records in 1976. Walter Gibbons created the extended remix, stretching the track into a long, DJ-friendly version designed for dance-floor play.
Before this release, 12-inch records were mainly used as promotional or specialist discs. The larger format allowed louder mastering, improved sound quality, and more room for an extended groove. “Ten Percent” demonstrated that the format could also succeed as a retail product.
The historical credit can cause confusion because Tom Moulton is widely credited with pioneering the 12-inch single concept, while Walter Gibbons made the landmark “Ten Percent” remix. The answer to this question is the song—not the remixer or the label.