His concert activity has taken him into the major German concert halls, as well as into music metropolis abroad; and his repertoire covers works from the baroque to contemporary music. The range of his artistic activities is also apparent in a variety of radio and television productions.  He recorded Gershwin’s “Rhapsody in Blue” and “Songbook”, as well as Antheil’s “Piano Sonatas” for WDR (West German Radio).  The premiere of Delorko’s

“MIDI Sonata” for piano, computer and synthesizer, as well as various piano recitals, have been broadcast live. He also performed Bernstein’s “Second Symphony” for the Saarland Radio. He appears on more than 25 CDs. In his compositional work, Delorko concerns himself equally with music for piano, chamber music, orchestral works and electronic music.

Additionally, in 2002 he arranged “Pictures at an Exhibition” by Moussorgsky for piano and orchestra.
When Steinway celebrated their “150 Year Jubilee” in 2003, Ratko Delorko created a program, “The History Of The Steinway Piano” for concert and CD, featuring 25 period instruments, at Steinway’s request.

In addition to these CD productions, Ratko Delorko has recorded Beethoven’s “Piano Concertos WoO 4 and No. 2” on period instruments (the remaining Beethoven piano concertos are being prepared), produced a CD with the entire oeuvre of Gershwin  (“Rhapsody In Blue”, “Preludes”, etc.) and released a live recording of the “Chopin Recital” at the Berlin Philharmonic.

Arguably, Delorko’s most distinctive concert program is titled, “The History Of The Piano” in which he presents 22 authentic period instruments in original playing condition and plays matching historical compositions for each of them while narrating the piano history.  He is the only artist to present such a program

Ratko Delorko currently teaches Master Classes and lectures at the Hochschule für Musik und Darstellende Kunst Frankfurt (Music University of Frankfurt, Germany) in addition to his tour schedule.  From 2007 on he performed and conducted masterclasses in Malaysia, Russia, Italy, the US and China.