Auto-Tune is an audio processor created by Antares Audio Technologies, which uses proprietary software to alter pitch in vocal and instrumental performances. It was originally intended to disguise off-key inaccuracies, allowing vocal tracks to be perfectly tuned despite originally being slightly off-key.

The processor slightly blends pitches to the nearest true semitone (to the exact pitch of the nearest tone in traditional equal temperament). Auto-Tune can also be used as an effect to distort the human voice when pitch is raised or lowered significantly. The overall effect to the discerning ear can be described as hearing the voice leap from note to note stepwise, like a synthesizer.

Auto-Tune is available as a plug-in for professional audio multi-tracking suites used in a studio setting and as a stand-alone, rack-mounted unit for live performance processing. Auto-Tune has become standard equipment in professional recording studios.

Auto-Tune was initially created by Andy Hildebrand, an engineer working for Exxon. Hildebrand developed methods for interpreting seismic data and subsequently realized that the technology could be used to detect, analyze, and modify the pitch in audio files.

Faheem Rasheed Najm (born September 30, 1985), who goes by his stage name T-Pain, is an American singer-songwriter, rapper, record producer, and actor. His debut album, Rappa Ternt Sanga, was released in 2005. In 2007, T-Pain released his second studio album Epiphany, which reached number one on the Billboard 200. His third studio album,Thr33 Ringz, was released in 2008. T-Pain has earned two Grammy Awards alongside artists Kanye West and Jamie Foxx.

T-Pain is the founder of the record label Nappy Boy Entertainment, established in 2005. Throughout his career as a singer, T-Pain has extensively used the Auto-Tune pitch correction effect.

Najm was born in Tallahassee, Florida on September 30, 1985. His stage name is short for "Tallahassee Pain" and was chosen because of the hardships he experienced while living there. He is a Muslim. At just three years old he got his first taste of the music business. A friend of the family, gospel jazz artist/producer Ben Tankard allowed him to hang out and "twist the knobs" at his recording studio. At age ten, Najm turned his bedroom into a music studio, using a keyboard, a beat machine and a four-track recorder.

Alfred Matthew "Weird Al" Yankovic (pronunciation: /ˈjæŋkəvɪk/; born October 23, 1959) is an American singer-songwriter, music producer, accordionist, actor, comedian, writer, satirist, and parodist. Yankovic is known for his humorous songs that make light of popular culture and that often parody specific songs by contemporary musical acts. Since his first-aired comedy song in 1976, he has sold more than 12 million albums (as of 2007), recorded more than 150 parody and original songs, and has performed more than 1,000 live shows. His works have earned him three Grammy Awards among nine nominations, four gold records, and six platinum records in the United States. Yankovic's first top ten Billboard album (Straight Outta Lynwood) and single ("White & Nerdy") were both released in 2006, nearly three decades into his career.

Yankovic's success comes in part from his effective use of music video to further parody popular culture, the song's original artist, and the original music videos themselves, scene-for-scene in some cases. He directed later videos himself and went on to direct for other artists including Ben Folds, Hanson, Black Crowes, and The Presidents of the United States of America. In addition to recording his albums, Yankovic wrote and starred in the film, UHF, and television show, The Weird Al Show. He has also made guest appearances on many television shows, in addition to starring in Al TV specials on MTV.

Rahul Gandhi ([ˈraːɦʊl ˈɡaːnd̪ʱiː]; born 19 June 1970) is an Indian politician and member of the Parliament of India, representing the Amethi constituency. Gandhi is the general-secretary of the Indian National Congress. He is the grandson of Feroze Gandhi and Indira (née Nehru) Gandhi, and fourth-generation scion of the Nehru-Gandhi family.

Rahul Gandhi was born in Delhi on 19 June 1970 as the first of the two children of Rajiv Gandhi, who later became the Prime Minister of India and Sonia Gandhi, who later became President of Indian National Congress, and as the grandson of the then Prime Minister Indira Gandhi. He is also the great-grandson of India's first Prime Minister, Jawaharlal Nehru. Priyanka Vadra is his younger sister.

Rahul Gandhi attended St. Columba's School, Delhi before entering The Doon School in Dehradun (Uttarakhand), also his father's alma mater, from 1981–83. Meanwhile, his father had joined politics and became the Prime Minister on October 31, 1984 when Indira Gandhi was assassinated. Due to the security threats faced by Indira Gandhi's family from Sikh extremists, Rahul Gandhi and his sister, Priyanka were home-schooled since then. Rahul Gandhi joined St. Stephen's College, Delhi in 1989 for his undergraduate education but moved to Harvard University after he completed the first year examinations. In 1991, after Rajiv Gandhi was assassinated by LTTE during an election rally, he shifted to Rollins College due to security concerns and completed his B.A. in 1994. During this period, he assumed the pseudonym Raul Vinci and his identity was known only to the university officials and security agencies. He further went on to obtain a M.Phil from Trinity College, Cambridge University in 1995. After graduation, Rahul Gandhi worked at the Monitor Group, a management consulting firm, in London. In 2002 he was one of the directors of Mumbai-based technology outsourcing firm Backops Services Private Ltd.