quin wrote:I am wondering if there is a subset of the classical guitar community who finds tremolo so daunting as just to finally give up on ever attaining to it.
I ask this because I must be one of them. I have religiously done all of the exercises for months and years and can not get past 100 on the metronome and I think 120 is about the cut off point for tremolo to sound like a sustained noite (the tremolo effect).
I don't want to depress you further but you need to hit 16ths at around 140 to play the classical tremolo at the necessary tempo. Most concert players (JW for example) take it comfortably past that.
Tremolo is a refined and very controlled free stroke, not something divorced from mainstream technique like a special effect (althought it achieves a special effect of course). I wouldn't expect a player to reach a high level and simply not be able to play a tremolo. If on the other hand if your question is 'are some people physically unlikely to play at an advanced level' (which might include tremolo, but also maybe rapid free stroke scales or rapid arpeggios, for example) then I'd say yes, in the same way that not all of us would be able to play football at a high level.
Nature/nurture is inescapable, ask Darwin
Of course, whether your nurturing is actually optimum is another matter. There was once a thread in RMCG about tremolo tips, the idea was to compile them and publish a booklet as there were so many strategies (I think there is a new thread on tremolo roughly every week at Delcamp). Understanding your own shortcomings and applying the right tools to fix them is the fastest way to progress, and often this does not mean endless generic exercises which might get you nowhere.
BTW in tremolo the individual fingers are not moving that fast at all - at 140 each finger flexes and releases just over twice per second - this is not a fast twitch muscle issue.