What's the history behind the Disney's Sing-Along Songs line and who came up with the idea for this video series?

[DodgerGirl]

I have been a fan of Disney's Sing-Along Songs videos since I was a little girl and I would like to know the history of how Disney created this line and who thought of these videos? Also which were the first Disney's Sing-Along Songs videos created? I knew Snow White's Sing-Along Songs was the very first tape in the series and then in 1991 the Be Our Guest Sing-Along Songs video was added and the Aladdin based Friend Like Me debuted in 1992 and then after the ones based on The Lion King Pocahontas Mulan and The Hunchback Of Notre Dame were added Disney added live-action Sing-Along Songs after Disneyland Fun became the first live-action Sing-Along Songs video released in 1990. I also read that they also tried to release the whole series on DVD but only certain ones were released. These tapes were fun and I loved watching them as a little girl over and over again