Art, Music, Writing

 My take is simple Art like painting essentially enhances creative visualisation so, abstract ​and surrealism is preferred over portrait ( which cameras can do).

Music essentially appeals to emotions, that's why songs are preferred over poems ( which can be highly intellectual, scholarly). 

To understand Dikshitar one needs to have enough knowledge abt lot of things. 

Besides, St. Tyagaraja the structures are so well carved that it gets you easily into any raga , take for example brova bharama, manavyalakim, sarasa samadana ...

Writings can do anything and everything but preferably inspire  thoughts, ideas or improve ​ reasoning, judging, questioning etc.