April 30 is International Jazz Day. This trend traditionally causes a lot of controversy and speculation, although every year jazz gets closer and closer to the category of classics of musical art.

Metal (also known as heavy metal) is a heavier genre in rock music, which emerged from hard rock (hard rock) in the late 60’s and early 70’s in England and the United States.

Rock music is performed by a rock band. The main instruments are electric guitar, bass guitar, drums and vocalist.