Some links to find out more information on kriti music.
https://testbook.com/question-answer/who-was-the-pioneer-composer-of-kriti-form-ofnbsp--618c030a605ba8fb8dae63a8#:~:text=The%20pioneer%20composer%20of%20kriti%20form%20of%20Carnatic%20music%20was,about%20twenty%2Dfour%20thousand%20songs.
http://www.carnaticcorner.com/articles/kritignb.html