graph TD A[Start: Receive Input Data] -->|Receive MP3 URL| B[Process youtube-mp3-file] A -->|Receive Stem URLs| C[Process vocal-and-instrumental-stems] A -->|Receive BPM| D[Process bpm-value] B --> E[Skill #223: LLM Processing] C --> E D --> E E --> F[Generate Text Summary] F --> G[Format Data Structure] G --> H[Create agent-summary] H --> I[Return Final Text Response] subgraph Summary Generation E F G end subgraph Data Input B C D end subgraph Output H I end