Lena Katina was born in Moscow on October 04th, 1984 in the family of the famous musician - Sergey Katin - who collaborated with "Dyuna", Marina Khlebnikova and other representatives of Russian show-business. Starting from being 4 years old, Lena began, on her father's initiative, to attend various sport and music clubs for the purpose of fostering plastic arts and artistic talents. When she was seven, Lena entered an ordinary school and within a year she entered music school, piano class. When she was ten, she became a soloist of the famous children group "Avenue" where she sang for 3 years. When she was 13, Lena became a member of vocal and instrumental group "Neposedy" (Naughty Children) where she met Julia Volkova with whom she became friends. At the casting, she sang a song in Spanish and the jury were astonished by the quality of her voice. Soon Lena left the group due to her age - children sing in "Neposedy" up to 14 years old. At the age of 15 she successfully passed the casting for the musical project which was later named "Tatu". Later on, another girl joined the project - Julia Volkova who turned out to be at the second position according to the casting results, right after Lena.
Julia Volkova was born in the family of a successful businessman in Moscow on February 20th, 1985. At the age of 7, parallel to the ordinary school, Julia entered a music school, piano class. When she was 9, Julia became a member of the famous children vocal and instrumental group "Neposedy" (Naughty Children). At the casting Julia sang Russian folk song "Oy, to ne vecher". In a year, Lena Katina became a member of "Neposedy" as well, and soon Julia and Lena became best friends. When she was 11, Julia switched the ordinary school where she studied for the school fostering artistic talents. Three years later she leaves "Neposedy" to pass the casting and join musical project Tatu in which Lena Katina had already been in. At the age of 15, Julia enters vocal department of Gnessin's State Musical College and simultaneously becomes famous as a soloist of Tatu duo. In 2004 she had a baby. Now she is 20.