Pop superstar Madonna's forthcoming children's books are morality tales based on the mystical Hebrew texts she studies.

The singer, who is poised to hit the top of the British charts this weekend (19/20APR03) with American Life, wants to write something deeper than the other "vapid and vacant" titles for youngsters.

Earlier this year (03) she landed a deal but publisher Penguin would reveal no details of the contents - but the MATERIAL GIRL herself has announced the books are based on the Kabbalah.

She says, "I have a teacher I've been studying Kabbalah with for the last almost seven years now, and he's suggested that I write some children's stories based on a lot of things that I've learned in Kabbalah - so that's what I did."

She realised there was an opportunity when reading stories to her first child, daughter LOURDES, adding, "Now I'm starting to read to my son, but I couldn't believe how vapid and vacant and empty all the stories were.

"There were like no lessons, just all about princesses and like the beautiful prince arrives and he takes her for his wife and nothing happens, no efforts are made.

"Nobody asks her what her opinion is, or I didn't see anybody struggling for things. There's like no books about anything."