In 2002 Daniel started working with music producer Yoni Bloch,[1] taking a part in his productions as a pianist and an orchestrator.
Upon graduation Koren moved to NYC and began working as a staff pianist in Juilliard, NYU, Ballet Hispanico, and 92nd Street Y, accompanying and composing for dance companies and classes.
In 2009 Koren started working on PBS kid's web-series "Fizzy's Lunch Lab" as a musician,[3] composing the show's Main Theme as well as the score.
Thanks to their unique mix of music and comedy, The Koren Ensemble gained excessive popularity and passed over millions of views on their YouTube account.
The project, which based on Edvard Grieg's In The Hall of the Mountain King, earned millions of views worldwide and was presented in Cannes Lions International Festival of Creativity.
In 2011 Daniel Koren developed a music-video format consists of duplicated, "neckless" heads over a black background, making comical A Capella arrangements for known tunes as well as original compositions.