Which of Kesha's number-one singles features Diddy?
Kesha:  She achieved 3 more number-one singles, "Tik Tok" and "We R Who We R" as a solo artist, and "Timber" as a featured artist. Tik Tok: "Tik Tok" (stylized as "TiK ToK") is the debut single by American recording artist Kesha. Tik Tok:  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.
Tik Tok