Born in Braşov, Romania, graduated from the National Music University of Bucharest, conducting class, Horia Andreescu then attended master classes at Vienna (with Swarowsky and Östereicher), at Trier and Munich (with Celibidache).
From 1976 to 1987 he was Principal Conductor of the Philharmonic Orchestra of Ploieşti, from 1987 he conducted the Bucharest Philharmonic Orchestra (where he was appointed Assistant Director from 1987 to 1990), and currently is Chief Conductor of the Romanian Radio Orchestra.
He founded “The Virtuosi of Bucharest”, an ensemble he has led in concert and tour performances.
For over 12 years he was Principal Guest Conductor of Berliner Rundfunk Orchester, Schwerin Staatskapelle and Dresden Staatskapelle, having also conducting engagements with Berlin Staatskapelle, the Symphony Orchestras of Berlin, Vienna, Jerusalem, with Gewandhaus-Leipzig, the BBC Scotland, the Radio Orchestras in Madrid, Lisbon, Leipzig, Hamburg, Copenhagen, Reykjavik, the philharmonic, symphonic and chamber music orchestras in the Netherlands, Collegium Musicum – Copenhagen, the Israel Chamber Orchestra, the Philharmonics of London and Budapest, also with famous soloists such as Anne Sophie Mutter, Maxim Vengherov, Misha Maisky, Viktor Tretiakov, Elisabeta Leonskaia, Uto Ughi, Zoltan Kocsis etc. He has been often invited at numerous festivals, “Wien Modern”, “Wienerfestwochen”, “Europa Musicale” – Munich, the Berlin Contemporary Music Biennial Festival, “George Enescu” – Bucharest, the festivals in Dresden, Copenhagen, Santander, Istanbul, among others.
His rich discography includes numerous recordings with the Radio Orchestras of Bucharest, Berlin, Cologne, the BBC Scotland, Madrid, Suisse Romande, and record releases (over 50) on Marco Polo/Naxos, Bayer Record, Aksak-France, Attacca-Holland, Q Disc – Holland, Olympia – London, Erki Tonlist – Iceland, “ Kultur und Media “, Electrecord. In 2004, Hastedt – Germany edited a new CD with works by Pascal Bentoiu performed together with the WDR Koln Orchestra, followed by another CD together with the Radio Berlin Symphonic Orchestra for cpo, summing up over 500 minutes of recorded music in the capital of Germany alone. In 2005 RCA-Red Seal released a CD with contemporary music (with the Berlin Radio Orchestra).
He is also a professor at the National Music University in Bucharest.
He has won numerous awards, such as The Critique Award at the Biennial in Berlin – 1981, The Cultural Merit – Knight, UNESCO 2003 Award.