The Blued Trees project is a transdisciplinary thought experiment, physically manifested across miles of the North American continent. It melds ideas about music, acoustics, art and environmental policy. Hundreds of GPS-located individual trees in the path of proposed natural gas pipelines were painted with a sine wave sigil. Each “treenote” contributed to an aerially perceivable composition employing the local terrain. The score is the formal skeleton for systemic changes challenging several laws. A mock trial explored how this project might open new directions in legal activism for Earth rights and contribute to an operatic libretto.