ACE Studio is a music-production-focused vocal cloning and singing-conversion tool that integrates directly into digital audio workstations via a VST3 plugin. It enables producers to create commercially-usable, royalty-free singing voices by training custom voice models from short recordings (e.g., ~30 minutes) and includes modes for choir/harmony generation while preserving performance nuances. ACE Studio is developed alongside research efforts (e.g., the ACE-Step music foundation model) to combine diffusion-based generative models and lightweight transformers, aiming to bridge cutting-edge music-generation models with professional DAW workflows.