Melnitsa (Мельница) is a Russian folk rock band that was formed in 1999. Its frontwoman, Natalia O'Shea (née Nikolayeva), is an academic with a PhD of philological science. She is considered an expert in medieval Indo-European languages, particularly with regard to Celtic languages.
She is often an instructor at Lomonosov Moscow State University, but her academic career is on and off with her spending most of her time in Switzerland or Ireland. As can be guessed by her name, she is married to an Irishman -- particularly, a diplomat.
Melnitsa's music is exclusively in Russian, though Celtic themes and instruments are often times included. Instruments include a cello, two acoustic guitars, bass, flute, percussion, harp, and vocals.