[2] In 2008 Eberlein founded the Siebenquart publishing house, which specializes in scientific books about the musical instrument organ.
[3] Today he works as a publisher, freelance researcher and private lecturer at the University of Cologne.
His research focuses on musical perception, the origin of tonality and the history of the pipe organ.
These rules can interact in a completely unforeseen way generations or even centuries later, and profoundly change the musical practice then in existence.
[5] After the publication of his habilitation thesis Die Entstehung der tonalen Klangsyntax (The Origin of Tonal Sound Syntax) in 1994, Eberlein turned his attention to organ history.