Boom! was an English language spinoff of the Russian eurodance group !Бум! (!BUM!) formed in 2009 in the United Kingdom. The trio consisted of !BUM!’s original vocalist Katia Kohanovskiy as the center, alongside Maria and Helena. They released their first single “How Do You Do?” in 2009, a cover of a BeFour song with the same name, which in turn was an English language cover of !BUM!’s most classic track “Kanikuly (Holidays)”.

The band quietly ceased and did not release any new songs after “How Do You Do?”, however DJs do continue to produce new remixes for the song even after Boom! disbanded in 2010.