Egge's final compositional period was characterized by his focus on twelve-tone technique. The composers first foray into this field is found in his Symphony No. 4 Sinfonia sopra BACH-EGGE op. 30, commissioned by the Detroit Symphony Orchestra in 1967. Tone row techniques are employed by Egge in works such as Symphony No. 5, Piano Concerto and Wind Quintet composed in 1976.
