Ratt is an American metal band formed in San Diego, California, in the 1970s, that had significant commercial success in the 1980s, with their albums having been certified as gold, platinum, and multi-platinum by the RIAA. The group is best known for their hit singles "Round and Round" and "Lay It Down," both of which charted in the top 40 of the Billboard Hot 100. Other songs such as "Wanted Man," "You're in Love," "Dance," and "Way Cool Jr." also charted on the Hot 100. The band's classic line-up consisted of Stephen Pearcy on lead vocals, Robbin Crosby on lead and rhythm guitar, Warren DeMartini on lead and rhythm guitar, Juan Croucier on bass guitar, and Bobby Blotzer on drums. Along with one of their peers Mötley Crüe, Ratt has been recognized as instrumental in the formation of the early 1980s Los Angeles metal scene. The band has continued to tour and record following extended hiatuses and line-up changes, with everyone from the principal line up in and out, releasing their latest studio album, Infestation, on April 20, 2010.