The Brian Wilson song “Caroline, No” ends with the sound of a train approaching a crossing.
A little research reveals that the recording was lifted from a recording by one Brad Miller made at Edison, CA around 1963 of train #58, “The Owl.”
I’ve always loved that horn (good reason to listen to some Beach Boys!) - the question is: What horn would SP have been using at that time on their passenger locomotives?
Hear it here:
That’s the one on Mister D’s Machine?
First guess: a Nathan M-5. No idea which combination, tho.
This link claims a M5 as well.
https://www.youtube.com/watch?v=0KfNjQzPUOA
Pet Sounds is still one of my favorites!! … Maybe because of this 
Wikipedia says that the designed chord for the M5 was an A 7th with doubled third. It also says that due to variations, they rarely played that exact chord.
Cool. Something to play with…
Thanks!
Now all I need to do is find a musician who understands what that means . . . [:-^]
(Coulda been me too many years ago, but I took a different track [:-,] . . . ).
Love the crossing bell sounds. Been trying to find one like that for the ringtone on my phone (the one I have now sounds like a boxing ring bell - very fast and montone). Then again, that horn might be even better!
I forget - you have a smartphone? It’s very doable.
I have an app on my Droid that lets me record and edit sounds, turning them into ringtones. Sometimes, it’s “who did I assign that to?”
If you’ve ever been to a gathering of firefighters, I’m sure you’ve heard the “Station 51” tones from “Emergency” or a Federal “Q” siren…
zug - yes, I do. It’s more a lack of time and ambition to plow through the many sound clips that are available and find a good one. Then too I’m not very good with apps to edit that kind of thing. Have to find a 14-year old railfan . . .