Ruach Studio is a GPU‑based song production suite built around the open YuE2 model, enabling users to write style and lyrics, generate vocals, and render full tracks locally. It supports score‑first composition, LoRA training, stem separation, remastering, and DAW export, with songs up to eight minutes long. On an RTX 3090, a 6‑minute‑12‑second track is produced in ~126 seconds, while a 7‑minute‑25‑second track with pre‑written score takes ~198 seconds.