Like many AM radio stations of the seventies, WLS edited many of the songs they played into a more "radio-friendly" or "radio edit" (a term still used today) format, usually 3–4 minutes in length. Other special editions of some Top 40 songs exclusively made for their broadcasting were done by the musicians themselves or sometimes by the WLS audio engineers. An example of these included Reunion's 1974 song "Life Is a Rock (But the Radio Rolled Me)". Reunion changed the song's lyrics from "Life is a rock but the radio rolled me" to "Life is a rock/WLS rolled me". A similar version was made for competitor WCFL. Another "WLS-only" version was a combination of Captain and Tennille's "Love Will Keep Us Together" and "Por Amor Viviremos", which featured alternating English and Spanish vocals.