[3] In 2017, Korsun met guitarist, DJ, and performer Mikhail Busin (also known under the pseudonym BOOSIN).

Later, they recorded a second joint song, "Drunk Groove", which became famous, even hitting the overseas charts.

They gave a concert on 10 June in Moscow to mark the opening of FIFA World Cup 2018.

[3] On 30 July 2018, they released a follow-up single to the lead track "Drunk Groove", titled "Focus on Me".

[10] After it became clear that she would be performing in two concerts in Russia the following months, Vice Prime Minister and Minister of Culture Vyacheslav Kyrylenko stated that artists who toured Russia or "did not recognise the territorial integrity of Ukraine" should not take part in Eurovision.

[12][14]On 24 February the National Public Broadcasting Company of Ukraine (UA:PBC) offered Maruv a contract; one of the terms forbid her to hold concerts in Russia.

[7] Maruv stated that the issue of not touring in Russia was not critical to her, and the major disagreement was about other conditions of the contract which she described as a cabal.

She said that she is a tax-paying citizen of Ukraine and genuinely loves her country, however she is not ready to turn her participation in the contest into the "promo-action of Ukrainian politicians".

[16] The next day it was revealed that UA:PBC and Maruv were not able to reach an agreement on her participation in the contest.

[18] "Siren Song" became a huge hit in CIS countries, and was certified three times platinum in Russia.