Star trek opening credits were always these expansive, gorgeous classical pieces. Highly aspirational, with intense, driving music but very grandiose. Much like the show itself, with its themes of exploration, discovery and compassion.
This was the case for the first 4 star trek shows, but when the 5th show Enterprise premiered, a show about the federation leading up to the original series timeline, its intro was a country pop power ballad. Think “I love my blue jeans, I love my truck, l love my beer and America” style.
Its still inspirational and driving, but it was a wild departure from the more cerebral intros that came before it.