Just now, 103.7 fm changed its tune. At 3 p.m., the comforting AAA sounds of The Mountain gave way to the “rhythmic format” of the New Hot 103.7. We were not there to witness the unannounced switch-over, but our money is on Brandi Carlile as the artist that soundtracked the station’s last gasp.

Welcome to a new paradigm in local radio that you are most likely ambivalent about. Nevertheless has claimed the title, “The Rhythm of Seattle,” and is boasting 10,000 songs in a row, commercial-free. That means that the steady stream of beat-driven R&B and propulsive pop hits will continue until Thursday, September 26, at 2:58 p.m. What happens after that, only heaven and Entercom know.

“Ride Wit Me” by Nelly

“Love Me, Love Me” by Shaggy

“Locked Out of Heaven,” by Bruno Mars

“Same Love” by Macklemore

AAA format

Their likes went from 3 to

“Playing 10,000 songs in a row, commercial free.”