Hard rock is usually based on blues while the metal has its roots in classical music. It means that if you want to hear the classical music, you can enjoy metal because in metal songs the scales are usually used the same as that of classical music.
So, classical music is kind of the backbone of the metal songs and the progression in the songs is also relatable. In the same way, the template used in hard rock songs is same as used in blues and scales choice is also relatable among these.
The competition is high in metal as compared to hard rock. This competition is based on the skills that metal songs require and due to these skills, the drummers and guitarists also get attracted to metal.
The technical skills of a metal musician are way better than the hard rock musician on average. Hard rock music doesn’t require a high degree of vocal skills and some of the metal singers are also opera trainers.
Metal requires more talent than hard rock. It is due to its complexity and high competition. The amount of struggle may remain the same but the quality of work needed to develop the comparative skills is different.
Hard rock can represent a music culture but metal cannot be the famous music culture. When we turn on the radio, we never listen to any metal song there. Also, if you go to the mall, you don’t hear any metal over there too. The hard rock is more common than metal.
Hard rock is slower as compared to metal and hard rock sounds little happier than metal which feels like more sad and deep.
Hard rock is little less diverse than metal. You will feel a clear difference that in rock music, the musician plays the same template multiple times over and over again, while in metal, the scenario is completely different as it involves unique experiments. Hard rock is usually more fun than the metal and metal includes more serious themes.