Rudolf Innig studied organ, piano, church music, music education, and musicology in Detmold, Cologne, and Paris. His teachers included Gaston Litaize and Michael Schneider (organ), Hans Martin Theopold and Friedrich Wilhelm Schnurr (piano), and Arno Forchert (musicology). He was the recipient of a fellowship from the "Studienstiftung des Deutschen Volkes" and a prizewinner in various competitions in the organ field. Concerts, recitals, and radio recordings have taken him to almost all the European countries and to North America, Russia, Japan, and Korea.

His numerous CD recordings with the complete organ works of Johannes Brahms, Franz Lachner, Felix Mendelssohn, Felix Nowowiejski, Horatio Parker, Robert Schumann, and Olivier Messiaen have been honored with numerous international recording prizes, including the “Prize of the German Record Critics” in 1995, the “Cannes Classical Award” in 1998 together with the Musica Alta Ripa Ensemble, and the “Echo Classical Prize” in 1999. From 1998 until 2005 Rudolf Innig has been at work on a complete recording (12 CDs) of the organ works by Josef Gabriel Rheinberger on historical instruments in Southern Germany and in Switzerland.

After many years as director of the School of Music in Coesfeld, lecturer at the Music Academy in Detmold and organist at the Marktkirche Coesfeld Rudolf Innig lives since 2012 as a concert organist in Bielefeld.