Since 1988, Peter Waldner has been organist at the Mariahilf parish in Innsbruck. An active concert schedule has taken him to the most important countries in Europe, and he has been a guest at many festivals for early music. Numerous CD and various radio recordings (ORF, RAI, Dutch broadcaster KRO) document his versatility. Since 1994, Peter Waldner has been recording CDs with early music played on historical keyboard instruments at regular intervals, first self-published, later for ORF Tirol and Vorarlberg, the label "Extraplatte" Vienna and ORF - Edition Alte Musik was published and was very positively reviewed by the international specialist press. His two CDs "Orgellandschaft Ritten I & II" were awarded the Pasticcio Prize of the Austrian Radio Ö1.
For many years he has been working primarily on Johann Sebastian Bach's organ and harpsichord works, which he has brought to life in a large-scale cycle. He has played Bach's most important composition cycles for piano and organ several times in concert: the "Art of Fugue ", both books of the "Well-Tempered Clavier", the "Goldberg Variations", the "French Suites", the "Inventions & Symphonies", the "Musical Sacrifice", the "OrgelBüchlein", the Leipzig and the Schuebler Chorales.  ;Time and again there was cooperation with recognized ensembles for early music: La Capella Reial de Catalunya & Le Concert des Nations (Jordi Savall), Atalanta Fugiens Milano, La Venexiana, Prihsna Ensemble, Les Sacqueboutiers de Toulouse, Piccolo Concerto Vienna and Oni Wytars.
In 1989 Peter Waldner received a scholarship from the piano company Bösendorfer Vienna, in 1991 the music promotion prize of the Tyrolean savings banks and in 1994 the Jacob Stainer Prize of the State of Tyrol for his services to the interpretation of early music on historical keyboard instruments.