The Analysis, Creation, and Teaching of Orchestration (ACTOR) Project is pleased to announce our second Timbre and Orchestration Summer School (TOSS2), held at the University of British Columbia’s School of Music in Vancouver, Canada, July 12–15, 2024. Building on the first edition's success — TOSS1 in Thessaloniki, Greece, in 2023 — the second edition again foregrounds the rich and interdisciplinary world of timbre and orchestration research, engaging with questions related to musicology, history, music theory,