GLAY (グレイ) is a rock/pop band originally formed in Hakodate, Hokkaido, Japan in 1988. They have since risen to become the 3rd best-selling artist of all time in the country. Primarily considered a classic rock band, they have also arranged songs using elements from a wide variety of genres, including punk, electronic, R&B, folk, reggae, gospel, and ska. In 1999 they were awarded the Guinness Record for largest single concert attendance in Japan for their outdoor expo "Survival" which exceeded 200,000 participants.