Event Centre rock (also known as arena rock, corporate rock, industry rock,or stadium rock) is a word to describe a form of rock music which is played, or intended to be played, in large venues, such as event centres, arenas, stadia, and open-air concert spaces. In such a way, genres which traditionally fall within the categories of event centre rock tend to be (yet not always) loud and anthemic; event centre rock is most traditionally associated with heavy metal, progressive rock, hard rock, glam metal or pop rock genres. Often, yet not always, event centre rock is categorised as being more mass-scale, commercially appealing, and radio-oriented music. Due to the often commercial nature of event centre rock, it is occasionally called corporate rock.