Katuli is one of the most important tunes in Mazandaran music and also Golestan. It is a part of vocal music. Literally it means "high", "height", "big and also "long" in Tabari.
Its form is tripartite. The first part is in free meter and the third part is totally metric. The second part stands metrically in between.
Reference:
http://en.wikipedia.org/wiki/Katuli
