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?
Related documents: [0]  [DOC] "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. [END] 
[1]  [DOC] "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. [END] 
Answer: 
Kesha
Kesha