I neglected to mention that some of my favorite Israeli pop music sounds very similar to the spaghetti western music, and wouldn't feel out of place in those films.
A few examples follow:
First,שיירת הרוכבים ("Caravan of Riders"), an oft-covered song by The Duda'im:
The second one is called חמישה פחות אחד (which translates to "Five Less One"). It's by "Benny's Friends," It's in a sense, a toast to a missing friend. I assume it's a friend who died in war. Interestingly, the album with this song also has a cover of "Caravan of Riders"):
Now, don't any of those three songs sound like they could have been in a spaghetti western?