Nice.
What headlight is that?
I've had along odyssey trying to find a decent moto horn.
The Stebel Nautilus Compact Airhorn (and knockoffs), are the business as far as volume is concerned. But I've given up on them. They don't seem to last me more than a year. I suspect water getting blown in the horn, but they just seem to crap out too soon for their price. Plus, they're really hard to hide.
The electric ones, even with names that make your ears feel like they will certainly bleed, don't impress me at all with their volume.
My totally inelegant solution: Tie wrap the air cannister for a 100 psi bicycle air horn around the left shock tube and use the old OEM mirror mount (after mounting bar ends), to fasten the plastic horn part that usually mounts on a bicycle handlebar. (No more room on my bars due to way too many farkles). I have to raise my left thumb and push sideways toward the center of the bike, but I've gotten in the habit of covering the button with my thumb when traffic gets dicey, or when lane splitting.
It's WAY LOUD and piercing in frequency. And even then, cars will continue to merge into my on the freeway, AFTER they've turned and looked at the noise. I really wish I could mount a train horn. Maybe haul it and its compressor on a trailer? I rather like the sound of the Leslie SuperTyfon model S-5T.
https://en.wikipedia.org/wiki/Train_horn