I-F, short for Interr-Ference, also known as Ferenc.
Real Name: Ferenc E. van der Sluijs
Legal name: Ferenc E. van der Sluijs
I-f (also Interr-Ference) is the stage name of Ferenc E. van der Sluijs, a Dutch producer and DJ based in The Hague. He is a former member of the Dutch techno-pioneers Unit Moebius.