graph TD A[Start: Receive Input Data] -->|Receive Original MP3| B[Input 1: youtube-mp3-file] A -->|Receive Stem URLs| C[Input 2: vocal-and-instrumental-stems] A -->|Receive BPM| D[Input 3: bpm-value] B --> E[Skill #223: LLM JSON Generator] C --> E D --> E E --> F[Process: Format Data into JSON Structure] F --> G[Create JSON Object] G --> H[Validate JSON Structure] H --> I[Output: youtube-song-summary] I --> J[End: Return JSON Response]