I’ll agree with music transporting your mind back in time. The rock songs from ‘76-’78 take me back to my grad school days at CSM in Golden, CO. I was just out of the draft Army. By day, I was in an excessive number of grad geology classes and also a TA seemingly teaching every Geo 101 or mineralogy lab offered because I was an out-of-stater. By night, I was calculating data points for fugacity diagrams for my thesis on my HP 67. In the late night hours, while calculating, was when I was hearing all those songs. Now hearing those songs almost has me punching in numbers on those buttons in my mind.
That is what is magical-you can almost taste that time...
Hah, I'll bet just seeing an HP 67 does nearly the same thing for you, with those red LEDs displaying the numbers...