Tempo Catalog Warmup

Count tracks, total runtime, genre mix, and top performer in a music catalog using pure Python loops.

You're an analyst at Tempo, a music streaming startup. The label pitch is Friday, and the team needs the prototype catalog sanity-checked before it ships.

The catalog is already in your notebook as a list of Python dicts — no pandas yet. Five short steps, ~30 minutes. The last step wraps the logic in a reusable function.