Some true and false about The Chicago Transit Authority:

True - The band had to reduce their royalties because of the multi-album format of the band's first four releases.

And false… they didn’t stop doing double albums because of running out of material. It was their record company, and it’s policy of only paying royalties on only ten songs on an album… the first four Chicago albums had between 12 and 31 songs.

The Band was completely managed and produced By Dave Clark. Early on in their recording careers, Clark had the foresight to own all the master tapes and all the songs rights, which was unheard of at the time. According to the likes of Paul McCartney and Elton John, it was pure genius. 

In 1966 after years of wallowing with little Aussie success, Barry, Robin and Maurice headed back to England. But ahead of them, they sent a demo tape to Brian Epstein, the Beatles manager, he liked it, gave the tape to Robert Satigwood, who was working for Epstein at the time. When the brothers docked back in England in January of 1967, they hooked up with Stigwood; he got them a five-year contract with Polydor records.

Now, there have been legendary rhythm sections associated with recording studios that have played on thousands of records for pop legends; the Funk Brothers with Motown, The Swampers with the Mussel Shoals studios, in Alabama, the west coast sound from the Wrecking Crew… MFSB out of Philadelphia and SalSoul out of New York… but Booker T and the MG’s had more chart presents and was much more of an established act then any of them.