Zappa said, we wouldn’t get signed today, at least those cigar chomping guys took risks on people like us, the Beach Boys too.
I wouldn’t sign Zappa either, same with Hendrix, sorry.
The Beach Boys were a different matter, Brian Wilson’s dad was a jingle composer and was able to talk with industry insiders, plus that early sound was pure pop, nothing experimental or hippyish (long hair, drugs) about it.
Basically, it was a single sine-wave oscillator, the tuning or pitch being controlled by a mechanical linear slide action with a contact moved against a keyboard-like scale -- much like a trombone slide, which isn't surprising given that Tannerin was a trombonist. This made it much easier to play in tune than a real Theremin, and to control the vibrato.
Technical Editor, Sound On Sound...
(But generally posting my own personal views and not necessarily those of SOS, the company or the magazine!)
In my world, things get less strange when I read the manual...