I Will Survive also frequently recalled as a symbol of female strength and as a gay anthem. In 2016, the Library of Congress deemed Gaynor's original recording to be "culturally, historically, or artistically significant" and selected it for preservation in the National Recording Registry. Originally released as the B-side to a cover version of the Righteous Brothers song "Substitute", "I Will Survive" became a worldwide hit for Gaynor when disc jockeys played that side of the record instead. "Substitute" appeared on the "Billboard" Bubbling Under the Hot 100 chart for four weeks in October–November 1978, peaking at No. 107. "I Will Survive" then
A-side and B-side but eventually, cassette maxi-singles, containing more than two songs, became more popular. Cassette singles were phased out beginning in the late 1990s, and the A-side/B-side dichotomy became virtually extinct, as the remaining dominant medium, the compact disc, lacked an equivalent physical distinction. However, the term "B-side" is still used to refer to the "bonus" tracks or "coupling" tracks on a CD single. With the advent of downloading music via the Internet, sales of CD singles and other physical media have declined, and the term "B-side" is now less commonly used. Songs that were not part of an artist's collection of