Question: What is the name of the singer-songwriter who recorded a cover of Britney Spears' hit, "Toxic"?

Context paragraphs:
Britney Spears: In the Zone: Britney Spears: In the Zone is the fifth video release by American recording artist Britney Spears.  Released by Jive Records on April 6, 2004, it accompanied the album of the same name.  The DVD contains her ABC concert special "Britney Spears: In the Zone", as well as footage from live performances to promote the album.  It also includes the music videos for "Me Against the Music" and "Toxic" and their respective episodes of "Making the Video", as well as unreleased material, such as several new tracks.

Sad Britney: Sad Britney is the third EP from American singer-songwriter Christopher Dallman.  It was released on November 9, 2009 by Beauteous Bird Records.  After hearing Dallman's cover of Britney Spears's "Gimme More", producer Rachel Alina suggested releasing an EP of Spears's songs to bring attention to his music.  The EP also included covers of "Radar", "Toxic" and "... Baby One More Time".  All the songs were recorded during the first day of the recording of his second EP, "Never Was".  The EP became Dallman's first record to chart on iTunes.  His music video for "Gimme More" received attention from Spears's fans who misenterpreted his message and thought he was parodying her, which he denied.

Oops! I Did It Again: The Best of Britney Spears: Oops!  I Did It Again: The Best of Britney Spears (stylized as oops!  i did it again the best of britney spears) is a compilation album of American singer Britney Spears.  It was released on June 15, 2012 by Sony Music Camden.  The album contains some early singles but is considerably filled with album tracks and bonus tracks from five of her studio albums: "...Baby One More Time" (1999), "Oops! ... I Did It Again" (2000), "Britney" (2001), "In the Zone" (2003) and "Circus" (2008).  The album does not contain tracks from "Blackout" (2007) or "Femme Fatale" (2011).  Its issuance with no official press release or announcement took both fans and critics by surprise.  When fans on Twitter asked about the compilation, global distributor Sony Music stated they had no knowledge of the album.  It was not released in the US for unknown reasons.

Britney Spears: Live and More!: Britney Spears: Live and More!  (stylized as britney spears: live and more!)  is the second video album by American recording artist Britney Spears.  It was released on VHS on November 21, 2000 and later re-issued on DVD alongside Spears' first home video release, "Time Out with Britney Spears" on February 13, 2001.  This video tracks Britney Spears on her much-publicized visit to Hawaii for her "Crazy 2K Tour".  Spears, polished and sophisticated beyond her years, tours the island with a mix of sightseeing, fan appearances, and live performances.  The camera follows her as she practices with her dancers, hangs out with friends, and even attempts to hula dance.  The highlight, is the culminating live performance where Britney performs some of her greatest hits like "Oops! ...I Did It Again, "(You Drive Me) Crazy", and "...Baby One More Time".  Although the DVD peaked at number four (#4) in the U.S., the DVD has been certified 3x platinum.  In France the DVD was certified platinum, meaning that it sold over 20,000 copies, and worldwide sold over 500.000 copies.

Britney Spears Live: The Femme Fatale Tour: Britney Spears Live: The Femme Fatale Tour is a 2011 concert special by American singer Britney Spears, documenting the August 13 and 14, 2011 shows of the Femme Fatale Tour.  Filmed at the Air Canada Centre in Toronto, the show was shot in 2D and 3D by 3ality Digital, and premiered on Epix on November 12, 2011.  BBC Worldwide attained distribution rights of the show outside the United States.  The special portrays a story in which Spears is a secret agent chased by a stalker, and features guest appearances by Nicki Minaj and Sabi.  "Britney Spears Live: The Femme Fatale Tour" received mixed reviews from critics.  The special effects and impressive stage were praised.

Time Out with Britney Spears: Time Out with Britney Spears (stylized as time out with britney spears) is the first video album by American recording artist Britney Spears.

Britney Spears doll: The Britney Spears doll is a celebrity doll made in the likeness of pop singer Britney Spears.  Several versions of the doll were released.  Each doll is dressed in costumes that resemble the clothing Spears had worn in concerts, appearances, and music videos.  The Britney Spears doll was the first doll produced by Play Along Toys.

Simon Ellis (record producer): Simon Ellis is a producer and musical director who has worked with Britney Spears, the Spice Girls, Westlife, S Club 7 and East 17.  He co-wrote and produced the S Club 7 hits "Don't Stop Movin'", "Two in a Million", "Never Had a Dream Come True" and "Alive".  "Don't Stop Moving" won the Brit Award for Best British Single and the ITV record of the year award in 2001.  During 2008, Ellis was appointed the role of musical director for Britney Spears's The Circus Starring Britney Spears tour in Australia & New Zealand.  During 2011 Ellis was musical director for Spears's Femme Fatale Tour.

List of songs recorded by Britney Spears: American singer Britney Spears made her chart debut in November 1998 with "...Baby One More Time", which attained global success and reached the top position of every major countries charts.  It was followed by the release of her debut studio album, "...Baby One More Time", which opened at number one on the Canadian Albums Chart and US "Billboard" 200, being later certified fourteen-times platinum by the Recording Industry Association of America.  Spears' second studio album, "Oops! ... I Did It Again", was released on May 16, 2000, and became the fastest-selling album ever by a female act in the US with 1,319,193 units sold in its opening week.  It spawned four singles: "Oops! ... I Did It Again", "Lucky", "Stronger", and "Don't Let Me Be the Last to Know".  In November 2001, Spears' self-titled album spawned worldwide hit "I'm a Slave 4 U", which is notable for being a musical departure from her previous material.  After a two-year break, Spears's fourth studio album, "In the Zone", was released in November 2003.  The album featured "Me Against the Music", a collaboration with Madonna that reached the top position of the European Hot 100 Singles, and "Toxic", which earned Spears her first Grammy in the category of Best Dance Recording and gained her credibility among critics.  Her first compilation album, "", was released the following year and sold nearly 6 million copies worldwide.

Toxic (song): "Toxic" is a song recorded by American singer Britney Spears for her fourth studio album "In the Zone" (2003).  It was written and produced by Christian Karlsson and Pontus Winnberg (known collectively as Bloodshy & Avant), with additional writing from Cathy Dennis and Henrik Jonback.  The song released on January 13, 2004, by Jive Records, as the second single from "In the Zone".  The song was originally offered to Kylie Minogue for her ninth studio album "Body Language" (2003), but she rejected it.  After trying to choose between "(I Got That) Boom Boom" and "Outrageous" to be the second single from "In the Zone", Spears selected "Toxic" instead.  A dance song with elements of bhangra music, "Toxic" features varied instrumentation, such as drums, synthesizers and surf guitar.  It is accompanied by high-pitched Bollywood strings, sampled from Lata Mangeshkar and S. P. Balasubrahmanyam's "Tere Mere Beech Mein" (1981), and breathy vocals.  Its lyrics draw an extended metaphor of a lover as a dangerous yet addictive drug.  The song has received acclaim from music critics, deeming it the strongest track of "In the Zone", and praised its hook and chorus.  "Toxic" won Spears her first and only Grammy Award at the 2005 ceremony in the category of Best Dance Recording.

Supporting paragraphs: Sad Britney Toxic (song)
Answer: Christopher Dallman