The Vijayanagara musicological nonet consists of a work that is one of the most important what?
Vijayanagara musicological nonet The Vijayanagara musicological nonet or the Sangitashastra navaratna are a group of nine musicological treatises written during the reign of the Vijayanagara empire. These works are counted among the most important and definitive treatises in Carnatic music theory. Each of these works contributed seminally to the growth of the Carnatic music tradition. These nine works are the "Sangitasara" by the sage Vidyaranya, "Taladipika" by Salva Gopa Tippendra, "Sangitakalanidhi" by Kallinatha, Bhandaru Vittaleshwara's commentary on the "Sangita Ratnakara", Bhandaru Lakshminarayana's "Sangitasuryodaya", Achyutadevaraya's "Talakalabdhi/Talakalavriddhi" and the much celebrated "Swaramelakalanidhi" by Ramamatya.
Nakkeerar Nakkeerar was a medieval Tamil poet from Madurai. He is renowned for his most famous work, the "Tirumurukāṟṟuppaṭai". He was also the author of another work called "Iraiyanar Akapporul". He should not be confused with the Sangam period writer Nakkirar (c. 250 CE), who composed anthologies like the "Neṭunalvāṭai".