For mixtapers, here’s a bizarro ’50s reply card reformatted into a downloadable cassette J-card insert (along with my own themed song mix).

Throughout life, but perhaps most profoundly in our youth, we encounter things or people that click on a cellular level—a movie; a book; a group of friends that awakens, challenges or reflects our feelings or worldview in ways that help define our identity. For me, it was a radio station.

How am I as old as “Mah Na Mah Na” yet never knew its origins until now?