Big believer in keeping a close eye and ear on my surroundings when I ride. Thought I might be able to monitor ambient sound well enough with Shokz bone-conduction earphones, as they don't cover or plug the ear canals. But not so in my case. Listening to earphone audio leaves that much less auditory attention for ambient sound, and I'm just not comfortable with that distraction in traffic — especially in a place crawling with near-silent electric cars.
I'd listen to lots of different genres with no traffic around — jazz, classical, funk, R&B, classic rock and country. Would be fun to make a mix of tunes that sync well with the 85-90 RPM cadence I fall into when I get in the zone. Steely Dan, Earth, Wind, and Fire, Tower of Power, Stevie Wonder, and Hendrix come to mind. (Showing my age here.) Mozart and Mendelssohn might work, too.