On this date in 1970, CHICAGO released the single 25 OR 6 TO 4 (Jun 30, 1970), a song that would become one of their most enduring and recognisable tracks. Penned by founding member and keyboardist Robert Lamm, the song's creation stemmed from a late-night writing session that perfectly captured the struggle of artistic inspiration. Lamm, speaking on The Chris Isaak Hour, recounted the song's origins: "I was living with a bunch of hippies up above Sunset Strip. One of the advantages of this part