I remember as far back as early elementary school. My parents had one of those furniture stereos and I'd spend hours sitting on the floor in front of it listening to music.
One time I was determined to listen to ALL the music ever played so I sat there listening, and when a song repeated I thought I had heard it all.
I had received a portable cassette player for my birthday and I spent lots of time pointing the microphone to the speaker on the "stereo" to make my own recordings. I would lock myself in my room and warn everybody to be quiet so I could make my recording. I proudly carried that cassette player everywhere I went.