Complex sentence: In South India, around 1200 BC, a scholar by name "Shaarjnadeva" wrote a treatise, which was named as "Sangeeta Ratnakara"-an Indian musical treaty that is considered to be the first documented work on South Indian classical music.
Split into simpler sentences: In South India, around 1200 BC, a scholar by name "Shaarjnadeva" wrote a treatise, which was named as "Sangeeta Ratnakara". This is considered to be the first documented work on South Indian classical music.