Lawyers for Lukasz "Dr. Luke" Gottwald amended the producer's official complaint on Monday afternoon. Additions include a birthday card Kesha sent to Dr. Luke as well as enthusiastic emails between Dr. Luke and her mother, Pebe Sebert.
Kesha's handwritten birthday note to the producer reads, "To the foxxy-est producer ever! Ur just getting better with time! Thank you for making my wildest dreams come true!" Although a year isn't attached to the birthday card, it's safe to assume it was given no earlier than 2009, when "Right Round" and "Tik Tok" became her first hit singles.