Tallapaka Annamacharya, also known as Annamayya, was a 15th-century Hindu saint, poet, composer, and writer from Tallapaka, Andhra Pradesh, India. He is the earliest known Indian musician to have composed songs called sankirtanas in praise of Venkateswara, a form of Lord Vishnu. He is widely regarded as the Grandfather of Telugu songwriting and the musical form of keertana songs that he composed has strongly influenced the structure of Carnatic music compositions. Annamacharya is remembered for his saintly life and is honored as a great devotee of Shree Vishnu. He is believed to have been the avatar of Nandaka, the sword of Shree Hari Vishnu. Annamayya is said to have composed as many as 32,000 sankeertanas, of which only about 12,000 are available today.