C# Studio-Quality Cover Generator

I need a small command-line utility written in C# that takes a single WAV file and returns a studio-quality cover version. The core functions must include pitch shifting, tempo adjustment and vocal isolation while preserving a warm, natural-sounding voice in the final mix.

Your code should compile under the latest stable .NET release and run cross-platform via dotnet run. Feel free to leverage proven audio libraries such as NAudio, SoundTouch or any other open-source DSP toolset, as long as licensing remains clean for commercial use.

Deliverables:
• Complete, well-structured C# source code and a compiled executable
• Clear CLI syntax (e.g., ‑-input, ‑-pitch, ‑-tempo, ‑-isolate-vocals, ‑-output) with basic help text
• Read-me explaining build steps, dependency setup and usage examples
• A quick demonstration clip that proves pitch/tempo shifts and vocal removal all work without audible artefacts

I’ll handle testing on my end; please include brief unit tests or a simple verification method so I can reproduce your results. Looking forward to a clean, efficient solution that turns WAV files into polished covers with minimal fuss.