I’m no scientist, but there seems to be something about human flesh directly connected to an analog instrument creating the nuance, inflection, or emotion of the notes is the most effective connection to the listener. It’s not that other things don’t add, they do, but it’s the humanity of the creation that never loses its attraction.
Couldn't agree more. In fact, you just reminded me of something said by one of my musical influences.
In the '90s I decided I'd better learn some bass, because I was playing on my own ad tracks, and felt I needed to know something about the instrument. Understand, I was brought up and trained on piano, not other stringed instruments (yes, pianos have strings, but you basically have at them with little hammers).
So I studied with one of the profs in the jazz department at a university in Detroit, who had also played on a ton of Motown sessions after James Jamerson passed. Great guy.
He said there's something intensely personal about an instrument where the player lays his hands on the strings. I'd have to agree. I think it gets me closer to my true melodic voice. In fact, I'm certain that I became a more melodic composer by working out ideas for guitar parts. It shows up in my orchestral work as well.
Don't get me wrong, I love playing piano, and am somewhat embarrassed by my guitar playing (it's why I hire great players to bring their vision to certain ads I write and produce, when I'm not satisfied with my own playing). Programming synths is also a passion.
But controlling strings directly with my hands really connects me with the instrument.
The other thing is, I don't know about you, but I feel that I don't much care for synths as solo instruments. If you have a great performance by a great singer, cool, no solo is even necessary, but a nicely constructed, short solo does help relieve the ear in the middle of a song, and make me excited about the build back into the vocal. In pop music, I connect with the guitar to do that.