Andrej Slezák is a composer and pianist of Slovak/Hungarian origin.
After finishing his studies of Natural Sciences specialized in Mathematics, he decided to devote himself entirely to music.
He graduated in Piano and Composition at the State Conservatory of Bratislava, than continued his music education at the Franz Liszt Academy of Music in Budapest where he also studied Jazz Composition and Improvisation. In 2006 he moved to France for a one-year scholarship at the Conservatoire National Supérieur de Musique et de Danse de Paris.
He finished his studies obtaining a diploma with merit in 2007.

Prizes and awards at national and international competitions:
- Hungarian New Music Forum Composers' Competition (Budapest, 2015)
- Toru Takemitsu International Composition Competition (Tokyo, 2010)
- Dimitris Mitropoulos International Composition Competition (Athens, 2009)
- Stadtpfeifer International Composition Contest (Salzburg, 2008)
- International Composition Competition "Zeitklang" (Vienna, 2008)
- International Jazz Composition Competition (Budapest, 2006)
- Slovak Music Competition of Conservatories (Bratislava, 2003).

Andrej Slezák speaks six languages, presently he lives in Switzerland.