Ground Frequency Measures the Underground

Field notes

Ground Frequency combines event listings from tracked venues with a weekly artist-momentum score, then publishes both rankings and reported follow-ups. The homepage identifies 22,079 venues across 169 countries and uses a trailing 28-day, coverage-weighted event window. Its reporting format tests chart results against touring diaries and venue records, including cases where a rising designation conflicts with an artist’s longer history or where a venue’s apparent activity clusters on an unexpected day.