In Carnatic music, the term Jaathi refers to the number of matras or counts in a laghu, which is one of the angas (components) of tala.
Sankeerna Jaathi means a laghu consisting of 9 aksharas (beats).
Types of Jaathis and their Aksharas:
Tisra Jaathi – 3 aksharas
Chaturasra Jaathi – 4 aksharas
Khanda Jaathi – 5 aksharas
Misra Jaathi – 7 aksharas
Sankeerna Jaathi – 9 aksharas
Usage:
Sankeerna Jaathi is less commonly used due to its complexity, but it offers intricate rhythmic variation in advanced compositions.