[OC] Cultural Borders: A real-time interactive map of what the world is listening to (YouTube Charts)

**How I built it (The “Beautiful” Data part):**

* **Data Sources:** Music data is fetched via YouTube Charts APIs. Map geometries are sourced from OpenStreetMap (Nominatim).
* **Data Pipeline:** I built a pipeline using **Python and GeoPandas** to discover locations via autocomplete APIs and fetch chart data in parallel (using 10 parallel workers to handle the ~90k rows of data).
* **Frontend:** The map is rendered using **MapLibre GL JS**, handling the `combined_map.geojson` and `charts_tracks.csv` files on the fly. I used topological simplification to ensure the map remains performant on web browsers.

**Key Features:**

* **Granularity:** Unlike most music maps that only show countries, this includes ~4,700 locations including cities and sub-regions.
* **Beyond #1:** You can explore the full Top 20 context for each specific territory.
* **Non-overlapping Geometry:** I used a custom global geometry that preserves local specificity while allowing instant interaction.

Interesting that the Brazilian Phonk artist (ZXKAI) is #1 all over Russia but not even charting in Brazil itself.

One of the few actual good posts from this sub. Cool project.

nice map. Italian top 3 songs are the top three position in Festival di Sanremo (Italian music biggest show of the year). The first one “per sempre sì” will go to eurovision this year.

Thank you for sharing – what a cool resource