During this period of Hoysala control, distinctive Kannada literary metres such as "Ragale" (blank verse), "Sangatya" (meant to be sung to the accompaniment of a musical instrument), "Shatpadi" (seven line) etc. became widely accepted. The Hoysalas expanded the Vesara architecture stemming from the Chalukyas, culminating in the Hoysala architectural articulation and style as exemplified in the construction of the Chennakesava Temple at Belur and the Hoysaleswara temple at Halebidu. Both these temples were built in commemoration of the victories of the Hoysala Vishnuvardhana against the Cholas in 1116. Veera Ballala II, the most effective of the Hoysala rulers, defeated the aggressive Pandya when they invaded the Chola kingdom and assumed the titles "Establisher of the Chola Kingdom"