Hillebrandt was listed as a member on NIN in a 1997 ''Kerrang!'' interview. [https://groups.google.com/g/alt.music.nin/c/cJlN2GKF4GA/m/SU1yRq3BDGoJ] On David Bowie's ''[[I'm Afraid Of Americans]]'', Hillebrandt is listed as a full member of NIN along with [[Dave Ogilvie]], [[Danny Lohner]] and [[Charlie Clouser]]. He was evidently planned to be part of a multiple-keyboardist setup for the live band that [[Trent Reznor]] originally put together for the [[Fragility]] tour, but ''[[The Fragile (halo)|The Fragile]]'' took a different route sonically and this idea was scrapped, although he did play keyboards for [[The CRC Sessions]].
He ended up becoming was an in-house programmer for Reznor from 1997-2002, and created an entire library of sounds towards use on ''The Fragile''. This was detailed in an article[http://www.nin-pages.de/2004_Apple_Hillebrandt_english.htm] from Apple:
<blockquote>"I sent a copy of my first ''Useful Noise'' CD down to [[Nothing Studios]], and Trent (Reznor) eventually heard the sounds, liked what he heard and said he wanted to buy the whole library. But he couldn't because Rarefaction had started up and they were going to release the CD," explains Hillebrandt.