This wasnt for teens, it was for kids aged 4-8. It was a big hit with me at least, I am not sure how much of a hit it was with others. Most of the kids that I knew would have at least some of these cassettes. I however, had them all, and would listen to them most of the day.
I dont know why they finished producing them. Perhaps they werent as big a hit with the masses as I think they were.
I got introduced to Tarzan and Sindbad through these cassettes. Most of the Hans Christian Anderson stories I had read in English as well, but it was still fun listening to their dubbed versions in Urdu. What was also interesting was to listen to a voice all day, and then see that person on TV !!!! Qazi Wajid probably had the most distinctive voice, so was the lady playing Kala, Tarzans Gorilla Mother (I think the name was Ismat Tahira or Zeenat Yasmin or something like that).
I think the Casette Kahanis went up till number 20, and then died. The quality of these cassettes was super, or at least I used to think so. Havent heard them for nearly 20 years now, so dont really know if I was too young to notice, or if they were really very high in production value.
On Muziq.net, you can listen to all Cassette Kahani's I believe. The link is: