If you listen to power metal and epic metal side by side, the first difference you will notice is that power metal music is faster than epic metal. Epic metal is not truly a subgenre of metal. It involves orchestra synths, fantasy-inspired lyrics, and more variations in the music. It may sound similar to power metal, but it is majorly focused on symphonies, unlike power metal. Power metal is more aggressive and uplifting with the guitar and vocals. You may feel that power metal is motivating, while epic metal has more of a depressive feel. It may seem like listening to an orchestra full of violins sometimes.