rotation

What is rotation?

Rotation Map is a globe of today's music charts: 166 countries, 174 cities, ranked by how much of their chart the rest of the world isn't playing, with the receipts under every record. Press a place and it plays. Pick a record and the globe inverts to show everywhere it's charting. Flip the lens by source: Apple Music, Spotify, Shazam. Shuffle picks a record, then a place, and says why. A seatback strip reads back miles, local time, weather. Night side lit by NASA city lights.