The lyric from “When the Saints Go Marching In” is “Oh, when the saints go marching in.” “In” completes the song’s famous title and chorus.
The song is a traditional African-American spiritual that later became a major jazz standard, especially through its association with New Orleans. Its origins are unclear, but it appears to have developed in the early twentieth century from several similarly titled gospel songs. The first known recording dates to 1923, by the Paramount Jubilee Singers.
Louis Armstrong and his orchestra made one of the most famous recordings on May 13, 1938, helping establish the song internationally. It is often performed at funerals, religious events, parades, and sports stadiums. The New Orleans Saints football team also helped cement its sports-anthem identity.
There is no single official version of every verse: traditional singers have altered lines and added new ones over time. The title is also sometimes mistakenly rendered “When the Saints Come Marching In,” but the standard title and the quiz’s quoted lyric use “go,” followed by “in.”