"It Must Be Love" is a song written by Bob McDill, and recorded by American country music artist Don Williams. It was released in July 1979 as the third single from the album Expressions. The song was Williams' ninth Number One single on the U.S. Billboard Hot Country Singles charts. Charts Weekly charts Year-end charts Alan Jackson version In 2000, country music artist Alan Jackson recorded a cover of the song and released it as the third single from his album Under the Influence. Like Williams' version before it, Alan's cover also reached Number One on the Billboard country charts, a position that it held for one week. It also managed to reach the Top 40 on the Billboard Hot 100, peaking at #37. Chart performance "It Must Be Love" debuted at number 68 on the U.S. Billboard Hot Country Singles & Tracks for the week of April 29, 2000. Year-end charts References 1979 singles 2000 singles Don Williams songs Alan Jackson songs Songs written by Bob McDill Song recordings produced by Garth Fundis Song recordings produced by Keith Stegall MCA Records singles Arista Nashville singles 1979 songs