Cj Jeff

Greek DJ and producer Cj Jeff, born Nikólaos Zafeíris, operates under the alias Nikos Zafiris and founded Rhythmetic Records. He began releasing music in January 2010 and has accumulated 47 releases across his career. Zafeíris established his own imprint Rhythmetic Records, which serves as his primary outlet for original productions and curated releases.

Cj Jeff produces tech house, house, deep house, and melodic house & techno, releasing music on notable labels including Saved Records, Bunny Tiger Dubs, Objektivity, and Kling Klong alongside his own Rhythmetic Records. His productions span the house music spectrum, from deeper grooves to more driving tech house arrangements, positioning him within the contemporary European house scene. The artist maintains consistent output with releases scheduled through February 2026, demonstrating sustained productivity in the electronic music circuit.