"Most theremin performances are hailed as brilliant if the thereminist manages to stay on key." - Coalport
I think this is probably true about those who have just "got into" theremins, and who realize how difficult they are - but does it apply to the casual listener? I doubt it.. Most peeps (?) when they see/hear a theremin performance will probably (a) be distracted by the novelty and not notice the intonation (unless it is extremely naff) too much (b) not be "moved" by a mediocre performance (c) only be moved if the performance (which rarely happens) "communicate passion, fire and ...human emotion".
I suspect that those who "get into" theremins seriously (whether they attempt to play one, or just as a listener) will have encountered a truly great performance which got them hooked - They will have heard a performance by a "great" like Clara, Lydia, Yourself or one of the extremely few people who has "the ability to communicate passion, fire and the entire spectrum of human emotion through playing."
And I think (I speak for myself here) one then may go through a phase where "performances are hailed as brilliant if the thereminist manages to stay on key" - but I dont think this "phase" lasts long.
And, to me, this is where Amey's potential to be one of "the greats" stands out - Almost from day 1 of her "exposing" her exploration of the theremin, there was (IMO) passion and emotion in these performances, even if there were pitch "errors". It seems, to me, that as her playing improves, more emotion comes through in what she plays (and "errors" have reduced to a level where, for me, they are either unnoticable or not bothersome) - There are thereminists who are (IMO) technically far superior - but their performances do absolutely nothing to me.
I first got really hooked on the theremin when I saw Lydia perform - Up until then, I saw the theremin as almost an "accessory" for electronic music 'construction'. I still see a role for the theremin as an electronic music "accessory" and also think some people can convey emotion by using the theremin differently as Gordon does - I certainly prefer to listen to one of Gordons performances than to a performance by someone who is "on key" but leaves me emotionally untouched.
Fred.