Srirangam in Southern India, located on an islet formed by the Twin Rivers Cauveri and Kollidam, is the foremost among the 108 Divyadesas. It has an eventful history, both traditional and historical. The beauty of Lord Ranganatha enshrined in this huge temple (156 acres), in his characteristic Yoga Nidra , has captivated all the legendary Saint Poets (Azhwars), leading to many beautiful hymns.
Legend talks about the Lord having informed Brahma of him appearing on his own volition, as an idol. Brahma appointed Surya to do the daily pooja as per agamas. The idol later passed on to the Ishvaku dynasty of Ayodhya. On his triumphant return from Lanka, at the coronation, Ram gave the idol as a gift to Vibhishana. Enroute to Lanka, when Vibhishana halted by the banks of Cauvery for his mid-day prayers, he placed Ranga at a place called Chandrapushkarani; upon return from bath, he performed the Pooja and lo! when he tried to lift the Vimana, it would not move. The Lord appeared before the distraught Vibhishana and consoled him saying that he had already decided to make the place His abode, where he could be worshipped daily. It is said that Vibhishana worships the Lord everyday at .
Power of music and devotion
Reportedly, Saint Thyagaraja, one of the greatest musical composers of devotional hymns, arrived here during a 'Brahmotsava'. Being a stranger to the place, he could not get near the horse-vehicle. But the bearers could not move forward. It was soon known that the divine procession could be continued only after the Saint had his darshan of the Lord. The musical composition “O Ranga Sayee” was dedicated by the saint to the Lord, after this exhilarating experience.
Sri Sri Publications Album ‘Celestial Nectar’ Vol 3 contains the author's Ode to Ranga; Here's a youtube link.