Elena Anca Petcu (b. October 4, 1982) is a singer of pop-dance music in Romania, known as Yanka Lena. Anca was born in Galati, Romania, and was part of "School Stars" 2nd edition. Anca became known in Romania together with the band Cat Love Dogs, under the guidance of Michael Ogăşanu then joined the band ZUM and collaborator show Cârcotaşilor Chronicle. Under the name Mamasita started a project produced in collaboration with Narcotic Sound & Christian D.