graph TD A[Stem Separator] --> B{Tempo Analyzer} B --> C[Receive 3 MP3 file URLs] C --> D[For each MP3 file URL] D --> E[Call skill #195 - Extract Beatpoints & Tempo of MP3] E --> F[Save output as plain text] F --> D D --> G[Combine plain text outputs] G --> H[Pass combined output to Sample Extractor]