Who popularized Ragale, a metre native to Kannada language?

Harihara popularized the Ragale, a metre native to Kannada language. Harihara is thus revered by both Vaishnavites and Shaivites as a form of the Supreme God. Harihara is also sometimes used as a philosophical term to denote the unity of Vishnu and Shiva as different aspects of the same Ultimate Reality called Brahman.