Comment by wtcactus
But, Dadaism, for instance, was a far left movement. Its followers, were people that held radical or even far left views. [1]
Marxism is really a cancer that destroys everything it touches. Its final aim was always to destroy everything that is beautiful, elevated or pure about mankind, and we, as a society, have been sponsoring it with our taxpayer money that pays for the self anointed gatekeepers of intellectualism that populate a big part of our Academia - that is to say, all Academia that doesn't get judged by the outcomes of their ideas when applied in practice.
If your definition of leftism is "progressive" then I'm sorry to tell you: all advances in art were made by people you'd consider "leftists".
There is simply no way that a conservative worldview brings any art form forward, not even from classically-inspired backgrounds, by pure definition it attempts to keep the status quo, and all they achieve is a soulless repetition of what art was from the period they considered as "golden".
Not much dissimilar to what you are trying to do, to be honest.