That said, I can see where the OP is coming from with calling progressive rock objective music. The obvious connection is to [Atlas Shrugged character] Richard Halley, who (like many prog musicians) wrote his music not for any sort of acclaim but as an expression of himself; nothing more. He did not write it for anyone else, he wrote for himself. I certainly think that prog embodies this musical better than any other philosophy, but I don't know if that means you can call it purely objective music.

Brilliant idea; though, I never would have thought of this.

Excerpts form Rand's "ROMANTIC MANIFESTO":

"Philosophically, Romanticism is a crusade to glorify man’s existence; psychologically, it is experienced simply as the desire to make life interesting."

"What the Romanticists brought to art was the primacy of values, an element that had been missing in the stale, arid, third- and fourth-hand (and rate) repetitions of the Classicists’ formula-copying. Values (and value-judgments) are the source of emotions; a great deal of emotional intensity was projected in the work of the Romanticists and in the reactions of their audiences, as well as a great deal of color, imagination, originality, excitement and all the other consequences of a value-oriented view of life. This emotional element was the most easily perceivable characteristic of the new movement and it was taken as its defining characteristic, without deeper inquiry.

Such issues as the fact that the primacy of values in human life is not an irreducible primary, that it rests on man’s faculty of volition, and, therefore, that the Romanticists, philosophically, were the champions of volition (which is the root of values) and not of emotions (which are merely the consequences)—were issues to be defined by philosophers, who defaulted in regard to esthetics as they did in regard to every other crucial aspect of the nineteenth century.

The still deeper issue, the fact that the faculty of reason is the faculty of volition, was not known at the time, and the various theories of free will were for the most part of an anti-rational character, thus reinforcing the association of volition with mysticism."