The Timeless Riff: Chicago’s “25 or 6 to 4”
“25 or 6 to 4” is an iconic song written by American musician Robert Lamm, one of the founding members of the band Chicago. This song, recorded in 1969 for their second album, Chicago, features Peter Cetera on lead vocals. The track is a quintessential piece of rock history, marked by its distinctive riff and intriguing lyrics. Upon its release as a single in June 1970, “25 or 6 to 4” swiftly climbed the charts, reaching number 4 on the US Billboard Hot 100 and number 7 on the UK Singles Chart. It became the band’s first song to break into the top five in the US, solidifying Chicago’s place in rock music’s hall of fame.
The creation of “25 or 6 to 4” is as fascinating as the song itself. In a 2013 interview, Robert Lamm revealed that he composed the song on a twelve-string guitar that was missing its two low E strings, which added a unique texture to the music. The lyrics, written in just one day, depict the experience of trying to write a song in the middle of the night. The title refers to the time—either 25 or 26 minutes before 4 a.m., capturing the sense of a restless creative struggle in the early hours.
Despite its straightforward meaning, the title “25 or 6 to 4” has sparked various interpretations over the years, ranging from theories about illicit drugs to hidden codes. However, Lamm has clarified that it simply describes the time, enhancing the song’s mystique and appeal.
Musically, “25 or 6 to 4” is anchored by its legendary opening guitar riff. Music editor Andy Hermann from LA Weekly describes this riff as a descending five-chord pattern played typically as power chords over four bars. This structure creates a powerful and memorable hook that has been compared to other iconic riffs, such as those in Led Zeppelin’s “Babe I’m Gonna Leave You” and George Harrison’s “While My Guitar Gently Weeps”. The riff’s enduring influence is evident, with even modern songs like Green Day’s “Brain Stew” being noted for their similarity to Chicago’s classic.
The original recording of “25 or 6 to 4” features an electrifying guitar solo by Terry Kath, utilizing a wah-wah pedal to create its distinctive sound. The song’s vocal performance by Peter Cetera is remarkable, especially considering he recorded it while his jaw was wired shut following an injury from a baseball game altercation. This dedication to their craft is a testament to the band’s professionalism and passion for music.
Since its release, “25 or 6 to 4” has been included in numerous Chicago compilation albums and has been celebrated by critics and fans alike. In 2015, Dave Swanson from Ultimate Classic Rock ranked it as the number one Chicago song. Similarly, Billboard magazine’s music critics named it the top Chicago song in 2019, while Guitar World placed it at number 22 on their list of greatest wah solos of all time.
“25 or 6 to 4” is more than just a song; it is a cultural touchstone that continues to resonate with audiences. Its compelling mix of lyrical intrigue, musical innovation, and historical significance ensures that it remains a staple in the annals of rock music. Whether you’re a lifelong fan or a new listener, the timeless appeal of Chicago’s masterpiece is undeniable.