Some myths are so hilarious that they’re plausible, and given how funny the story is, singer/guitarist Randy Bachman is actually responsible for spreading it as truth! When recording their hit “Takin’ Care of Business,” Bachman-Turner Overdrive apparently invited a pizza delivery guy to play piano in the studio. Per Bachman’s story, a guy sent to deliver pizzas to Steve Miller Band, who were recording next door, stopped in the wrong room by mistake.
He suggests their song could use a piano, they take him up on it, and the rest is history. Bachman’s brother Robbie, however, said that was a bit of an exaggeration on Randy’s part, and what really happened is a session musician recording next door was asked to play piano on the song, and in a hurry he wrote the chord progression on a pizza box. Seattle radio station KZOK actually had members of the band in the studio to sort out the truth of the matter, in fact, as well as a telephone interview with the pianist himself, Norman Durkee, a professional whose credits include being Bette Midler and Barry Manilow’s musical director. His best quote? “They don’t get high; they just eat a lot of pizza.” So, not actually a pizza guy. One more thing, though: get to the working overtime part!
Source: https://www.treblezine.com