Sentence examples for hard rock from inspiring English sources

"hard rock" is a correct and usable phrase in written English.
It can be used as a noun phrase to describe a genre of music, a type of mineral, or even a type of terrain. Here are some examples: - The band played a mix of classic rock and hard rock songs at the concert. - The hard rock mining process can be dangerous, but it yields valuable minerals. - The hikers had to climb over the rough terrain of the hard rock mountains to reach the summit.