Some songs capture a feeling so perfectly that they become timeless. Chicago’s “25 or 6 to 4” is exactly that kind of track—a blistering rock anthem born from the exhaustion and desperation of a musician trying to write a song at 3:35 in the morning. But this isn’t just another classic rock staple; it’s a masterclass in musical storytelling, a showcase for one of rock’s most underrated guitarists, and a song with a title that has sparked decades of debate.
The Story Behind the Title
Let’s start with that head-scratcher of a title. “25 or 6 to 4” isn’t a secret code or a reference to drugs, despite what many listeners assumed over the years. According to songwriter Robert Lamm, it’s simply the time on the clock when he looked up from his writing session. He was between 3:34 and 3:35 a.m.—25 or 26 minutes before 4 o’clock. The phrasing was a poetic way to capture a specific, mundane moment that turned into something extraordinary.
Lamm wrote the song on a twelve-string guitar that was missing two strings, composing the lyrics in a single day. The band first rehearsed it at the legendary Whisky a Go Go, and the rest, as they say, is history.
What the Song is Really About
The lyrics chronicle the struggle of creative block during the early morning hours. Lamm describes “searching for something to say” while city lights flash against the sky, capturing the frustration and fatigue that comes with trying to force inspiration. The song’s narrator tries closing his eyes, stares into space, and eventually gets up to splash his face, desperately waiting for the break of day.
It’s a surprisingly vulnerable concept for a song that rocks so hard. The tension between the tired, searching lyrics and the explosive musical arrangement creates a dynamic that feels urgent and alive—like the creative desperation it describes.
A Guitar Legend in Action
You can’t talk about this song without talking about Terry Kath. Chicago’s lead guitarist is criminally underrated in the pantheon of rock guitarists, but his work on “25 or 6 to 4” proves he belonged among the greats.
Jimi Hendrix himself reportedly called Kath “the best guitarist in the universe” after seeing the band perform. That’s not hyperbole from some music journalist—that’s the man widely considered the greatest electric guitarist of all time giving the ultimate compliment. Matchbox Twenty’s Rob Thomas repeated this story when inducting Chicago into the Rock & Roll Hall of Fame in 2016, calling it “badass”.
Kath’s solo on “25 or 6 to 4” is a masterclass in rock guitar. Using a wah-wah pedal—still relatively new at the time—he builds intensity over twelve repetitions of the song’s chord pattern, shifting to even more aggressive playing as the song reaches its climax. The interplay between Kath’s guitar, the driving rhythm section, and the horn section makes this track an exhilarating listen from start to finish.
Musical Innovation
The song is built around a simple descending guitar riff in A minor that became legendary in its own right. LA Weekly’s music editor Andy Hermann called it “The Riff,” describing a five-chord pattern (Am-G-F#-F-E) that has been compared to chord progressions in Led Zeppelin’s “Babe I’m Gonna Leave You” and even Green Day’s “Brain Stew”.
What makes the track truly special is how Chicago’s unique sound elevates it beyond standard rock. The three-piece horn section—trumpet, trombone, and saxophone—adds a jazz sensibility that sets the band apart from their contemporaries. Peter Cetera’s lead vocals, the harmony backing vocals, and the dynamic arrangement all work together to create something that feels both tight and explosive.
The Legacy
Released in June 1970 as a single from the band’s second album (simply titled Chicago), “25 or 6 to 4” climbed to number 4 on the US Billboard Hot 100 and number 7 on the UK Singles Chart. The song was so successful that it helped establish Chicago as a major musical force, blending rock energy with sophisticated jazz-influenced arrangements.
The song’s success wasn’t without controversy. Because of that cryptic title, many listeners assumed “25 or 6 to 4” was code for drugs—LSD in particular. The single was even banned in Singapore in 1970 for its “alleged allusion to drugs”. The ban lasted for decades, only being lifted in 1993. Lamm has consistently debunked these theories, maintaining that the song is simply about his real-life experience at that moment.
The track has had a long life in popular culture, appearing in the video game Rock Band 3, the TV show King of the Hill, the 2017 film I, Tonya, and the 2023 superhero movie The Flash. Even today, the song is performed live by Chicago, and it remains a staple of classic rock radio.
More Than a Classic Rock Song
“25 or 6 to 4” is a reminder that some of the best art comes from the most ordinary, human moments. A songwriter looking at a clock, exhausted and searching for inspiration, turned that frustration into one of the most memorable rock songs of the 1970s. It’s a track that works on every level—great lyrics, incredible musicianship, and a story that anyone who’s ever struggled to create can relate to.
And let’s be honest: any song that gets a compliment from Jimi Hendrix is worth paying attention to. “25 or 6 to 4” isn’t just a classic rock song—it’s a snapshot of creative struggle, a showcase for one of rock’s true guitar heroes, and proof that sometimes the best music comes from the quietest, most desperate moments in the dead of night.