There are (at least) three artists who have recorded under the name Andrea. 1) Andrea is a Bulgarian singer.
Teodora Rumenova Andreeva (born January 23, 1987), best known by her stage name Andrea (Cyrillic: Андреа), is a Bulgarian pop-folk singer. She and the Romanian singer Costi Ionita performed together and released music as Sahara.
Her musical career began with the help of her producer Lyusi Ilarionov.