"One Time" is the debut song of Canadian recording artist Justin Bieber. The song was produced and written by RedZone Entertainment's Christopher "Tricky" Stewart, Terius "The-Dream" Nash, and Kuk Harrell and production duo The Movement. It is the first single released from his debut EP, My World. It was first solicited to mainstream and rhythmic radio on May 18, 2009. It was released via digital download in the United States and Canada on July 7, 2009, and was released in several other countries during autumn 2009. An acoustic version of the song, called the "My Heart Edition" was released to iTunes on December 22, 2009. The song, moderately paced with R&B, pop, and hip-hop influences, is an ode to young love.

The song received positive reviews from critics, commending its production, vocals and quality of lyrics. The song was a commercial success, reaching the top twenty in Canada, US, Germany, United Kingdom, France and New Zealand and also charted in several other countries. The single has been certified Platinum in Canada and the United States. The accompanying music video portrays Bieber at a house party, and features his mentor, Usher and hometown friend, Ryan Butler. As of January 2010, the video had been viewed over 100 million times on the internet. The video is now the fifth most viewed video in YouTube history. Bieber performed the song in a number of live appearances including The Dome, The Next Star, and Dick Clark's New Year's Rockin' Eve with Ryan Seacrest.

One Time may refer to:

Justin Drew Bieber ( /ˈbiːbər/ BEE-bər, born March 1, 1994) is a Canadian Pop/R&B singer-songwriter, musician, and actor. Bieber was discovered in 2008 by Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with Usher in Atlanta, Georgia, and Bieber was soon signed to Raymond Braun Media Group (RBMG), a joint venture between Braun and Usher, and then to a recording contract with Island Records offered by L.A. Reid. Bieber's debut single, "One Time", was released in 2009 and peaked in the top twenty in Canada and charted in the top thirty in several international markets. His debut album, the seven-track EP My World, followed in November 2009, and was soon certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100.

Britney Jean Spears (born December 2, 1981) is an American recording artist and entertainer. Born in McComb, Mississippi, and raised in Kentwood, Louisiana, Spears began performing as a child, landing acting roles in stage productions and television shows. She signed with Jive Records in 1997 and released her debut album ...Baby One More Time in 1999, which became the best-selling album by a teenage solo artist. During her first decade in the music industry, she became a prominent figure in mainstream popular music and popular culture, followed by a much-publicized personal life. Her first two albums established her as a pop icon and broke sales records, while title tracks "...Baby One More Time" and "Oops!... I Did It Again" became international number-one hits. Spears was credited with influencing the revival of teen pop during the late 1990s, and became the 'best-selling teen aged artist of all time' before she turned 20, garnering her the honorific title of "Princess of Pop".

Mikey Bustos (born June 23, 1981) is a Filipino Canadian singer who has appeared on the reality television show Canadian Idol.

Bustos is from the Weston neighbourhood of Toronto. Before Canadian Idol, he worked as a temp at the Bank of Montreal.

Bustos placed seventh runner-up in the finals of Canadian Idol Season One in August 2003, despite Chart magazine's prediction: "If we were to lay our bets today, ChartAttack’s money would be on Toronto contestant Mikey Bustos, a slightly strange looking young man with a shaved head and the voice of an angel." From his very first audition where he floored the four judges, he established the largest fan base early in the competition, and made headlines all over the country.^{[citation needed]}

Bustos recorded with BMG Canada/Vik Recordings for the Canadian Idol compilation album, which was certified Gold on the Soundscan Billboard charts on second day of release, and ranked in the Top 5 best selling Canadian albums in its debut week, selling over 60,000 units nationwide.^{[citation needed]}