Also we want to mention that with growth of this genre, musicians who performed Heavy Metal created their own unique style, with long hair, leather jackets and pants, tee-shirts with symbols, tattoos, metal chains as well as special love of bikes symbolizing speed and male sexuality. Themes of heavy metal include power and aggression, anger and militancy and sometimes entering in to the mysticism and fantastic. Vocal of this genre usually is very sharp and energetic, but at the same time style of the performance can vary depending on the composition. Heavy Metal music can be distinguished by fast and aggressive pace, heavy electric guitar riffs and lengthy solos as well as the tight rhythm section of bass-guitar and drums.