With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: David Gilmour is a guitarist in Pink Floyd.
text_B: Pink Floyd were an English rock band formed in London .. London. London. rock. Rock music. They achieved international acclaim with their progressive and psychedelic music .. progressive. progressive rock. psychedelic. psychedelic rock. Distinguished by their use of philosophical lyrics , sonic experimentation , extended compositions and elaborate live shows , they are one of the most commercially successful and influential groups in the history of popular music .. live shows. Pink Floyd live performances. most commercially successful. List of best-selling music artists. Pink Floyd were founded in 1965 by students Syd Barrett on guitar and lead vocals , Nick Mason on drums , Roger Waters on bass and vocals , and Richard Wright on keyboards and vocals .. Mason. Nick Mason. Barrett. Syd Barrett. Waters. Roger Waters. Wright. Richard Wright ( musician ). Nick Mason. Nick Mason. Roger Waters. Roger Waters. Richard Wright. Richard Wright ( musician ). Syd Barrett. Syd Barrett. They gained popularity performing in London 's underground music scene during the late 1960s , and under Barrett 's leadership released two charting singles and a successful debut album , The Piper at the Gates of Dawn -LRB- 1967 -RRB- .. Barrett. Syd Barrett. London. London. The Piper at the Gates of Dawn. The Piper at the Gates of Dawn. Guitarist and vocalist David Gilmour joined in December 1967 ; Barrett left in April 1968 due to deteriorating mental health .. Gilmour. David Gilmour. Barrett. Syd Barrett. David Gilmour. David Gilmour. mental health. mental health. Waters became the band 's primary lyricist and conceptual leader , devising the concepts behind their albums The Dark Side of the Moon -LRB- 1973 -RRB- , Wish You Were Here -LRB- 1975 -RRB- , Animals -LRB- 1977 -RRB- , The Wall -LRB- 1979 -RRB- and The Final Cut -LRB- 1983 -RRB- .. Waters. Roger Waters. concepts. concept album. The Dark Side of the Moon. The Dark Side of the Moon. Wish You Were Here. Wish You Were Here ( Pink Floyd album ). Animals. Animals ( Pink Floyd album ). The Wall. The Wall. The Final Cut. The Final Cut ( album ). The Dark Side of the Moon and The Wall became two of the best-selling albums of all time .. The Dark Side of the Moon. The Dark Side of the Moon. The Wall. The Wall. best-selling albums of all time. List of best-selling albums. Following creative tensions , Wright left Pink Floyd in 1979 , followed by Waters in 1985 .. Waters. Roger Waters. Wright. Richard Wright ( musician ). Gilmour and Mason continued as Pink Floyd ; Wright rejoined them as a session musician and , later , a band member .. Gilmour. David Gilmour. Mason. Nick Mason. Wright. Richard Wright ( musician ). The three produced two more albums -- A Momentary Lapse of Reason -LRB- 1987 -RRB- and The Division Bell -LRB- 1994 -RRB- -- and toured through 1994 .. A Momentary Lapse of Reason. A Momentary Lapse of Reason. The Division Bell. The Division Bell. After nearly two decades of acrimony , Gilmour , Wright , and Mason reunited with Waters in 2005 to perform as Pink Floyd in London as part of the global awareness event Live 8 ; Gilmour and Waters later stated they have no plans to reunite as a band again .. Gilmour. David Gilmour. Mason. Nick Mason. Waters. Roger Waters. Wright. Richard Wright ( musician ). London. London. Live 8. Live 8. Barrett died in 2006 , and Wright in 2008 .. Barrett. Syd Barrett. Wright. Richard Wright ( musician ). The final Pink Floyd studio album , The Endless River -LRB- 2014 -RRB- , was recorded without Waters and based largely on unreleased material .. Waters. Roger Waters. The Endless River. The Endless River. Pink Floyd were inducted into the American Rock and Roll Hall of Fame in 1996 and the UK Music Hall of Fame in 2005 .. Rock and Roll Hall of Fame. Rock and Roll Hall of Fame. UK Music Hall of Fame. UK Music Hall of Fame. By 2013 , the band had sold more than 250 million records worldwide , including 75 million certified units in the United States .
related.