Answer the question at the end by quoting:

Sam Benjamin Harris (born April 9, 1967) is an American author, philosopher, neuroscientist, blogger, and podcast host. He is a critic of religion and proponent of the liberty to criticize religion. He is concerned with matters that touch on spirituality, morality, neuroscience, free will, and terrorism. He is described as one of the "Four Horsemen of atheism", with Richard Dawkins, Christopher Hitchens and Daniel Dennett.
Harris was born on April 9, 1967 in Los Angeles, the son of actor Berkeley Harris and TV producer Susan Harris (nee Spivak), who created The Golden Girls. His father came from a Quaker background and his mother is a secular Jew. He was raised by his mother following his parents' divorce when he was aged two. Harris has stated that his upbringing was entirely secular, and his parents rarely discussed religion, though it was always a subject that interested him. Fellow critic of religion Christopher Hitchens once referred to Harris as a "Jewish warrior against theocracy and bigotry of all stripes". While a student at Stanford University, Harris experimented with MDMA, and has written and spoken about the insights he experienced under its influence.  Though his original major was in English, he became interested in philosophical questions while at Stanford University after an experience with the psychedelic drug MDMA. The experience led him to be interested in the idea that he might be able to achieve spiritual insights without the use of drugs. Leaving Stanford in his second year, a quarter after his psychedelic experience, he went to India and Nepal, where he studied meditation with Buddhist and Hindu religious teachers, including Dilgo Khyentse. Eleven years later, in 1997, he returned to Stanford, completing a B.A. degree in philosophy in 2000. Harris began writing his first book, The End of Faith, immediately after the September 11 attacks.  He received a Ph.D. degree in cognitive neuroscience in 2009 from the University of California, Los Angeles, using functional magnetic resonance imaging to conduct research into the neural basis of belief, disbelief, and uncertainty. His thesis was titled "The moral landscape: How science could determine human values", and his advisor was Mark S. Cohen.

When did he decide he was an atheist?

he became interested in philosophical questions while at Stanford University



Answer the question at the end by quoting:

At the Drive-In is an American post-hardcore band from El Paso, Texas, formed in 1994. The band currently consists of Cedric Bixler (vocals), Omar Rodriguez (guitar, vocals), Paul Hinojos (bass), Tony Hajjar (drums) and Keeley Davis (guitar, vocals). After several early line-up changes, the band solidified into a five-piece, consisting of Bixler, Rodriguez, Jim Ward, Hinojos and Hajjar. At the Drive-In released three studio albums and five EPs before breaking up in 2001.
On November 12, 2000, At the Drive-In was involved in a motor vehicle accident when their touring van skidded out of control on ice and flipped onto its roof. Though the accident left the band shaken, none of the members sustained serious injury - Hajjar and Bixler-Zavala were taken to the hospital for minor injuries and released. In January 2001, At the Drive-In traveled to Australia for the Big Day Out music festival. While performing in Sydney, they left partway through their set after telling the attendance to calm down and observe the safety rules against moshing. After the refusal of the crowd, frontman Cedric Bixler-Zavala told them "You're a robot, you're a sheep!" and bleated at them several times before the band left the stage after performing only three songs. "I think it's a very, very sad day when the only way you can express yourself is through slam-dancing," he proclaimed. The following month, At the Drive-In cancelled the last five dates of its European tour, citing "complete mental and physical exhaustion" of the members.  In March 2001--less than a month away from a United States tour set to commence on April 14--at the peak of their popularity and following a world tour, At the Drive-In broke up, initially referring to the split as an "indefinite hiatus." The band played their last show at Groningen's Vera venue on February 21, 2001. A combination of excessive hype, relentless touring, artistic differences, and Rodriguez-Lopez and Bixler-Zavala's drug habits contributed to the demise of the band. Commenting on the hiatus, guitarist Rodriguez said: "After a non-stop six-year cycle of record/tour/record/tour, we are going on an indefinite hiatus. We need time to rest up and re-evaluate, just to be human beings again and to decide when we feel like playing music again."  Cedric Bixler took responsibility for the breakup, saying repeatedly in interviews that he felt almost as if At the Drive-In was holding him back and that he didn't want his music to be confined to punk or hardcore -- that it should encompass many genres and be even more progressive, alternative, and "against-the-grain." Bixler-Zavala and Rodriguez-Lopez had stated that they wanted their next album to sound like Pink Floyd's The Piper at the Gates of Dawn, while the other members were intent on progressing in a more alternative rock direction.

what was their music style?