David Andruss is a concert pianist, composer and pedagogue whose work bridges the concert stage and the teaching studio. American-born and resident in Germany since 1993, he has appeared as a soloist and chamber musician in Los Angeles, Chicago, New York, Salzburg, Berlin, Frankfurt, and Hamburg, and as a soloist with orchestra in the United States and Germany. Throughout his performing life, one question has stayed constant: how music is truly learned, and how it can be taught clearly and musically, especially for absolute beginners.

Many string teachers already know his playing without realizing it. Since 2002, in collaboration with the German Suzuki Institute, he has composed and recorded piano accompaniments for the Suzuki violin repertoire—published as Step by Step and Schritt für Schritt—and for the Recital Training series for violin (Edition Peters, Leipzig). Offered in several tempi, these recordings are used daily by Suzuki teachers around the world through the IMTEX online media library. In all, more than 1,000 of his accompaniment tracks have been released on labels including Yamaha, Warner, Alfred, and Peters.

Teaching has long been at the center of his career. From 2004 to 2023, he was a lecturer in classroom piano and song accompaniment at the University of Würzburg, where his courses were the first of their kind offered in a group instruction setting at a German university. He is the lead author of Keys4Music, a piano method used by Yamaha Music Europe specifically for group piano teaching, and has led teacher-training seminars across Europe for many years.

Since 2011, David has composed and recorded piano accompaniments for both the American and international editions of Piano Adventures, the method by Nancy and Randall Faber. In 2013, he became editor-in-chief of its continental European editions—German, Dutch, Italian, and Greek—co-translating the German edition and leading the translation teams for the others. Trained as a Piano Adventures clinician by Dr. Randall Faber, he now leads the method's seminars and online workshops for teachers throughout Europe.

David studied at the University of Southern California (Bachelor of Music, summa cum laude, and Outstanding Graduate of his class) and Northern Illinois University (Master of Music in piano and pedagogy). In Germany he earned his Konzertreife in Saarbrücken and a Meisterklassendiplom at the University of Music Würzburg, both under Bernd Glemser. He is a Fulbright scholar and a two-time First Prize winner of the Chicago Chopin Competition.