U2's "Rattle and Hum" (1988) features a secret message to the band's production manager, Anne Louise Kelly, reading "We Love You A.L.K.", but this was the first of several hidden messages referring to her in U2 albums, followed by her name being scrambled to make the name Kiley Sue LaLonne in the booklet of "Original Soundtracks 1" (1995) and then on most CD copies of "Pop" (1997), a message on the playing side of the CD near the matrix numbers reads "4UALKXXXX".