Oboist and conductor, principal professor of oboe at the Queen Sofía College of Music in Madrid.
Has distinguished himself on the national and international level with numerous awards and activities. Winner in oboe at the German Music College Competition in 1971, and the second prize at the ARD Competition in Munich in 1972.
Became solo oboist of the Cologne Radio Symphony Orchestra in 1975 and of the the Berlin Philharmonic in 1977.
In 1983 he was among the founders of the Ensemble Wien-Berlin, and in 1991 he founded the Berlin Haydn Ensemble.
Has appeared both as a chamber musician and a soloist with many outstanding colleagues and conductors of the rank of Herbert von Karajan, Carlo Maria Giulini, Riccardo Muti, Zubin Mehta, and Claudio Abbado. The Camerata Salzburg, Spanish National Orchestra, NHK Symphony Orchestra of Tokyo, Orchestra Verdi from Milan, German Radio Philharmonic of Saarbrücken-Kaiserslautern, and many other top-quality orchestras have regularly welcomed Hansjörg Schellenberger as their guest conductor.
Member of the jury of the XVI International Television Contest for Young Musicians 'The Nutcracker', discipline ‘Wind Instruments and Percussion’.