San Francisco’s Secret ‘Bop Spotter’ Mic Tracks Street Music in Real-Time

How a DIY Project Is Capturing the Mission District’s Soundtrack

In San Francisco’s vibrant Mission District, music fills the air—and now, a hidden device is documenting every beat. Perched high on a street pole (at an undisclosed location), a solar-powered box containing a repurposed Android phone runs Shazam 247, identifying songs played in the neighborhood. Dubbed the “Bop Spotter,” this clever invention logs these musical moments—or “bops”—and shares them on a public website, offering a real-time audio snapshot of the Mission’s eclectic culture.

What’s Playing in the Mission?

The Bop Spotter has already captured an impressive variety of tracks, reflecting the district’s diverse musical tastes. Recent highlights include:

  • Taylor Swift’s “Wildest Dreams”
  • Yo Gotti’s “Act Right”
  • Aventura’s “Cuando Volveras”

The Story Behind the Project

Creator Riley Walz told 404 Media that this innovative concept started as a simple weekend project with a modest $100 budget. Despite its humble beginnings, the Bop Spotter has already captured some memorable musical moments—including Walz’s personal favorite: a 3 AM rendition of “Just the Two of Us” by Bill Withers and Grover Washington.

Why This Matters

This project offers more than just musical discovery—it’s a unique cultural time capsule that:

  • Documents the evolving soundscape of urban neighborhoods
  • Showcases how simple technology can create community connections
  • Provides insights into public music preferences and trends

As the Bop Spotter continues its auditory surveillance, it promises to reveal even more about the musical heartbeat of one of San Francisco’s most dynamic neighborhoods.


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