During the dark ages, a long time before such words as iPod, mp3, YouTube were invented, there were 45 rpm records and we used to listen to them using machines that were very unimaginatively called "record players".
This is what a 45 rpm record looked like.
If you handled a record long enough, it would inevitably get scratched, which would, of course, worsen the sound quality. You can see several scratches on this particular record.
Back in the the dark ages when I was in high school in Turkey, I had a friend named Selim who had a pen pal named Liz, who, if I am remembering it correctly, lived in England. This record of Jethro Tull's Teacher was a gift from Liz to Selim. Their letter-writing friendship has been immortalized, at least for the time being, in the dedication on the record.
I found this record in a cabinet full of a whole bunch of other old stuff in my mom's place in Istanbul last May. I recognized it immediately, but I had no idea how it had ended up in my possession. Just a few days ago, I sent an e-mail to Selim (yes, I am still in touch with him, although I haven't seen him in more than a decade) and told him about it. He thinks he may have given it to me. Now, don't let Liz hear that.
Here's Jethro Tull performing Teacher: