AeRoSmItH,GuNs n RoSeS,LeD ZePpELiN.

Aerosmith is an American hard rock band, sometimes referred to as "The Bad Boys from Boston" and "America's Greatest Rock and Roll Band". Their unique style, rooted in blues-based hard rock, has also come to incorporate elements of pop, heavy metal, glam, and R&B, which has inspired legions of rock artists that came after them. They are the bestselling American hard rock band of all time, having sold 150 million albums worldwide, including 66.5 million albums in the United States alone. They also hold the record for the most gold and multi-platinum albums by an American group. The band has scored 21 Top 40 hits on the Billboard Hot 100, nine #1 Mainstream Rock hits, four Grammy awards, and ten Video Music Awards. They were inducted into the Rock and Roll Hall of Fame in 2001, and in 2005 they were ranked number #57 in Rolling Stone magazine's 100 Greatest Artists of All Time.
The band was formed in Boston, Massachusetts in 1970. Guitarist Joe Perry and bassist Tom Hamilton, originally in a band together called the Jam Band, met up with singer Steven Tyler, drummer Joey Kramer, and guitarist Ray Tabano, and formed Aerosmith. By 1971, Tabano was replaced by Brad Whitford, and the band began developing a following in Boston. They were signed to Columbia Records in 1972 and released a string of multi-platinum albums, beginning with their 1973 eponymous debut album. In 1975, the band broke into the mainstream with the album Toys in the Attic, and their 1976 follow-up Rocks cemented their status as hard rock superstars. By the end of the 1970s, they were among the most popular hard rock bands in the world and developed a loyal following of fans, often referred to as the "Blue Army". However, drug addiction and internal conflict took its toll on the band, which resulted in the departures of Perry and Whitford, in 1979 and 1981 respectively. They were replaced by Jimmy Crespo and Rick Dufay. The band did not fare well between 1980 and 1984, releasing a lone album, Rock in a Hard Place, which was a critical and commercial flop. Although Perry and Whitford returned in 1984 and the band signed a new deal with Geffen Records, it wasn't until the band sobered up and released 1987's Permanent Vacation that they regained the level of popularity they had experienced in the 1970s. Throughout the late 1980s and 1990s, the band scored several hits and won numerous awards for music from the multi-platinum albums Pump (1989), Get a Grip (1993), and Nine Lives (1997). After 38 years of performing, Aerosmith continues to maintain a high level of popularity and success and continues to tour and record music to this day.

Guns N' Roses is an American hard rock band, formed in Los Angeles, California in 1985. The band, led by frontman and co-founder Axl Rose, has gone through numerous line-up changes and controversy since its formation. Guns N' Roses have released five studio albums, two EPs, one live album, and three music video DVDs within its career. The band is currently working on the infamous album Chinese Democracy, which has been in production for over a decade. Once released the album will be the first original recording from Guns N' Roses since the 1991 releases of Use Your Illusion I and Use Your Illusion II.
Guns N' Roses have sold an estimated 90 million albums worldwide, including 39 million in the United States. The band's 1987 major label debut album, entitled Appetite for Destruction, has sold 27 million copies worldwide and reached number one on the United States Billboard 200. In addition, the album charted three Top 10 hits on the Billboard Hot 100, including "Sweet Child o' Mine" which reached number one.1991's Use Your Illusion I and Use Your Illusion II debuted on the two highest spots on the Billboard 200 and have sold a combined 14 million copies in the United States alone.
While glam metal was the leading genre in record sales, video charts and radio airplay, Guns N' Roses offered a grittier, more traditional take on rock music, and won many fans who admired their authenticity.

Led Zeppelin were an English rock band that formed in September 1968. Led Zeppelin consisted of Jimmy Page (guitar), Robert Plant (vocals, harmonica), John Paul Jones (bass guitar, keyboards) and John Bonham (drums, percussion). With their heavy, guitar-driven sound, Led Zeppelin is regarded as one of the first heavy metal bands. Their rock-infused interpretation of the blues and folk genres also incorporated rockabilly, reggae, soul, funk,classical, Celtic, Indian, Arabic, pop, Latin, and country. The band did not release the popular songs from their albums as singles in the UK, as they preferred to develop the concept of album-oriented rock.
Over 25 years after disbanding following Bonham's death in 1980, Led Zeppelin continue to be held in high regard for their artistic achievements, commercial success, and broad influence. The band have sold more than 300 million albums worldwide, including 111.5 million sales in the United States and they have had all their non-compilation studio albums reach the U.S. Billboard Top 10. Led Zeppelin are ranked No. 1 on VH1's 100 Greatest Artists of Hard Rock.Rolling Stone magazine has described Led Zeppelin as "the heaviest band of all time" and "the biggest band of the 70s".
On December 10, 2007 the surviving members of Led Zeppelin reunited (along with deceased drummer John Bonham's son Jason) for the Ahmet Ertegün Tribute Concert at The O2 in London.