Valeriya Andreyevna Engalycheva, known professionally as Lerika, is a Moldovan-Russian singer and songwriter. She represented Moldova in the Junior Eurovision Song Contest 2011 with the song "No-No", and Russia in the 2012 contest with "Sensatsiya". This made her the second Junior Eurovision Song Contest entrant to compete twice, and the first to represent two different countries.

The Junior Eurovision Song Contest 2011 was the ninth edition of the annual Junior Eurovision Song Contest, and took place in Yerevan, Armenia at the Karen Demirchyan Sports and Concerts Complex. It was the first time in history of the Junior Eurovision Song Contest that the contest was held in the previous year's winning country. Public Television Company of Armenia (ARMTV) was the main organizer and host broadcaster of the show, being provided financial aid from the European Broadcasting Union (EBU) made of entrance fees from the participating broadcasters, while Swedish company HD Resources assisted with the technical side of the production.