Adler then doubled their salaries to hire them for his startup publisher Trousdale Music and startup label Dunhill Records. Using the name Phil F. Sloan or P.F. Sloan (the "F" stood for "Flip", his nickname), Sloan wrote or co-wrote hits for many performers, including "Eve of Destruction" (Barry McGuire); "You Baby" and "Let Me Be" (The Turtles); "A Must to Avoid" and "Hold On!" (Herman's Hermits); "Take Me For What I'm Worth" (The Searchers); and "Secret Agent Man" (Johnny Rivers). This last song was the theme tune for "Danger Man", a British TV series that had been given a new title ("Secret Agent") and theme for the US market. Due to its line "You're old enough to kill, but not for votin'", "Eve of Destruction" was used as a rallying cry by supporters of the Twenty-sixth Amendment to the United States Constitution, which changed the voting age from 21 to 18 as of 1971.