Question: Which artist recorded a song with Diddy that was in the number one position of the Billboard Year-End Hot 100 Singles of 2010?
Context: "Touch Me, Tease Me" is a 1996 song by American R&B singer and songwriter Case from his self-titled debut album (1996).  In the United States, it reached number 14 on the US "Billboard" Hot 100, was ranked 63rd in the Billboard Year-End Hot 100 singles of 1996 and was Gold certified by the RIAA.  It further reached number 26 in the UK charts.  It features vocals from R&B artist Mary J. Blige and rapper Foxy Brown, with backing vocals by R&B duo Koffee Brown and Kelly Price.  The record contains a sample of the 1985 classic "P.S.K. (What Does It Mean?)"  by Schooly D. "Tik Tok" (stylized as "TiK ToK") is the debut single by American recording artist Kesha.  The song was produced by Dr. Luke and Benny Blanco and co-written by Kesha, Dr. Luke and Blanco.  It was released on August 7, 2009, as the lead single from Kesha's debut studio album, "Animal".  The opening line of the song came from an experience where Kesha woke up surrounded by beautiful women, to which she imagined Diddy being in a similar scenario.  The experience triggered the writing of the song which she later brought to her producer, Dr. Luke, who was then contacted by Diddy in hopes of a collaboration; he came to the studio the same day and recorded his lines and the song was completed.  According to Kesha, the song's lyrics are representative of her and based on her life; the song has a carefree message and talks about not letting anything bring you down. "Teen Beat" is a 1959 instrumental number by Sandy Nelson.  Released on Original Sound Records, it rose to number 4 on the "Billboard" Hot 100 chart in 1959.  It sold over one million copies, and was awarded a gold disc.  In addition, the song made #17 on the R&B Singles Chart and #9 on the UK Singles Chart.  The song also made #36 on the Billboard Year-End Hot 100 singles of 1959.  A re-recorded version, released as a single in 1964 and titled "Teen Beat '65", also made the Billboard and Cashbox charts. "Mentirosa" is a single by Mellow Man Ace from his debut album, "Escape from Havana".  It was one of the first songs produced by Tony G, with scratches provided by Tony's younger brother Julio G.  The song was Mellow Man Ace's lone hit single, peaking at #14 on the "Billboard" Hot 100, spending 24 weeks on the chart.  "Mentirosa" was additionally certified Gold by the Recording Industry Association of America, and was 99th on the Billboard Year-End Hot 100 singles of 1990.  The track is performed in Spanglish, and samples "No One To Depend On" and "Evil Ways" by Santana. "Couldn't Get It Right" is a 1976 song by the Climax Blues Band.  The song was written after the band's label told them that their 1976 album "Gold Plated" lacked a standout track and asked them to "try and write a hit".  They then wrote it, in the words of its bassist Derek Holt, "from absolutely nowhere" and it hit #10 on the UK Singles Chart.  Later on that year, the song was picked up by Sire Records and the following year it made #3 on the "Billboard" Hot 100.  Later that year, the song was ranked #32 on Billboard Year-End Hot 100 singles of 1977. "Billboard" publishes annual lists of songs based on chart performance over the course of a year based on Nielsen Broadcast Data Systems and SoundScan information.  For 2010, the list for the top 100 "Billboard" Hot 100 Year-End songs was published on December 8, calculated with data from December 5, 2009 to November 27, 2010.  At the number-one position was Kesha's "Tik Tok", which stayed atop the Hot 100 for nine weeks.  This achievement made her the first female in the history of the chart to top the Year-End Hot 100 with a debut single. "Allentown" is a song by American singer Billy Joel, which was the lead track on Joel's "The Nylon Curtain" (1982) album, accompanied by a conceptual music video.  "Allentown" reached #17 on the "Billboard" Hot 100, spending six consecutive weeks at that position and certified gold.  Despite the song placing no higher than #17 on the weekly Billboard Hot 100 chart, it was popular enough to be placed at #43 on the Billboard year-end Hot 100 chart for 1983. "I'm Doin' Fine Now" is a 1973 song by the band, New York City.  It reached No. 14 on the R&B Singles chart, No. 17 on the "Billboard" Hot 100, No. 8 on the Easy Listening chart, No. 20 on the UK Singles Chart and No. 46 on the Billboard Year-End Hot 100 singles of 1973. Jamie Walters is the self-titled debut from American actor and singer, Jamie Walters.  The album's first single "Hold On," reached number 16 on the "Billboard" Hot 100.  It placed at number 52 on the Billboard Year-End Hot 100 singles of 1995 list.  The album sold over 1 million copies and was certified platinum. Verities & Balderdash is the fourth studio album by the American singer/songwriter Harry Chapin, released in 1974.  (see 1974 in music). " Cat's in the Cradle" was Chapin's highest charting single, finishing at #38 for the year on the 1974 Billboard year-end Hot 100 chart.  The follow-up single, "I Wanna Learn a Love Song," charted on the Billboard Hot 100 Singles Chart at #44, and Billboard Adult Contemporary at #7.  A promotional single, "What Made America Famous?" , was released to radio stations as a 45.  The album was certified gold on December 17, 1974.
Answer: Kesha