I also think that we make too much of this "music while multitasking" bit. Since the car radio, radio, cassette player, people have done things as a regular practice to music. I was doing that as a kid in the mid 70s. I did virtually everything to music. It's interesting observing how many times in older films you might see someone playing music while cooking or something. Mind you, it's nearly always classical music !
*sigh* No, no. We can't keep this lie up any longer about how regular people could fit music into their daily lives back in the day. So I might as well tell the true story about how bands from decades past made all of those millions of dollars:
William R. Moneyworth IV - Steven, old boy! So good to see you!
Steven Tyler - So, what's going on, Will?
William R. Moneyworth IV - Well, Steven, It's about your music. I love how quiet it is. Loud noises make my monocle vibrate, you know. But if it isn't too much trouble, I do fancy a song about how irksome it is when the help is sweeping the floor three rooms down the hall. Such a ruckus all but downs out the music, by Jove.
Steven Tyler - I don't know, Will. I like your staff. I don't want to write something that insults so many hard working people.
William R. Moneyworth IV - Nonsense, old boy! Why, with the radios those commoners are able to procure, they can't possibly hear the lyrics in music as quiet as Aerosmith. They won't hear a thing, my good fellow.
Steven Tyler - Alright, tell you what. We'll use code. When I sing "Do me. Do me. Do me. Do me. Oooowwww!!", that will actually mean that I'm complaining about an inconsiderate maid sweeping too loudly. How's that sound?
William R. Moneyworth IV - Splendid! Yes! I say, Jarvis. Hop in the motor coach and purchase 10 million copies of Steven's previous musical recordings. This new song sounds exciting and I must be sure he has the means to produce it!
Jarvis - Very good, Sir.
Bonus trivia:
You know how concert goers threw up their hands with "devil horns" in the 70's and 80's? Those were rich people trying their hardest to show just how "fancy" they were. You can only extend your pinky finger so far. After that, to get any fancier you have to extend your index finger as well. After all, your index finger is the pinky on the other side of your hand.