@mahgister, @stuartk,
IMHO, art delights the mind and the soul to varying degrees. Critics and Historians can view historical periods through the lens of art. In the eighteenth century, I think writing and music were more geared toward delighting the mind. If we take a look at the great Haydn, he had a lot of wit in his music meant for the mind. Bach, who preceeded him, was much more soulful.
In music, writing, and the visual arts, the beginning of the nineteenth century is the beginning of the Romantic period. Beethoven writes music extremely soulfully and Romantic composers who followed were writing for the soul more than the head. The visual arts were no longer about Christianity or lords and ladies. We begin to see paintings of peasants and landscape art. That led into the Impressionists and post-Impressionists like Van Gogh who were extremely soulful.
In the 20th century artists begin breaking all the rules. Painters no longer have to paint representationally. Classical music turns from symphonies to tone poems and wild ballets by Stravinsky. Bartok studies folk music to find the soul for his music. Abstract expressionists found ways of expressing deep emotion without any recognizable forms. Jazz music begins and gets deeper and deeper into the soul.
I think artists in the mid-20th century became so deep that people wanted a relief. In the visual arts we find "Pop-Art" which is whmisical and appeals to the mind. Classical music is no longer appealing on a visceral body level. It's pretty much all for the mind. Poetry loses rhyme and meter which move sentiments. It is more aimed at the mind.
I think the best artists in any of the arts are the ones who find a perfect balance, and they are few and far between. Shakespeare is both heart and head. Beethoven is perfectly balanced. Louis Armstrong finds a way to bring blues (which by definition is for the soul) into a structured music. Art critics name Picasso and Matisse as the greatest of the 20th century artists, but I'm not sure.
I think some people prefer the head over the heart and others heart over head. As people understand art more, I think they see the genius in perfect balance--yin and yang.