Elena Sergeyevna Katina on 4 October 1984 in Moscow) is one of the two members of the Russian pop duo t.A.T.u. the other being Yulia Volkova. She is known for being the "good girl" of the duo. She is the eldest of three children born to Sergey Katin, a renowned Russian pop music author, and Inessa Katina. In 1994 she joined the famous Russian children's ensemble, "Avenue". She was part of it for three years, and at age 13 years was selected for "Neposedi", the most popular and prestigious children's chorus at the time.