THE CRUX. On Notation, Climbing, and Who Gets to Set the Grade
Two essays ago I borrowed from critical theory to ask what happens to difficulty once it becomes fashionable enough to teach. One essay ago I borrowed from game design to ask whether difficulty and pleasure were ever really opposites. This time I want to go somewhere the series has not been yet, a discipline that has spent roughly a century building the most sophisticated public vocabulary for objective physical difficulty that exists anywhere, and that music, oddly, has never borrowed a word from.
Rock climbing.
WHAT A GRADE ACTUALLY IS
Climbers grade routes. A boulder problem might be a V4. A rock face might be rated 5.11c. These numbers look, from the outside, like the kind of fixed technical specification a composer might put at the top of a score, a tempo marking, a difficulty rating, an objective fact stamped onto the material before anyone has touched it. But that is not how climbing grades actually work, and the difference is the whole point of this essay.
A grade is proposed by the first ascensionist, the climber who establishes the route. But it does not stay fixed. Every subsequent climber who attempts the route effectively votes on whether the proposed grade is honest, and over months and years, the number drifts toward whatever the accumulated, embodied experience of the climbing community actually says the route demands. A grade is not a specification handed down from the person who made the thing. It is a rolling consensus built from everyone who has since tried to do it. Climbers argue about grades constantly, in gyms, in guidebooks, in comment threads, with the kind of granular seriousness usually reserved for religious doctrine, and this argument is not a flaw in the system. It is the system. Difficulty, in climbing, is understood from the outset to be a social fact, not a private one.
Music has never built anything like this. A score's difficulty is treated as settled the moment the composer sets the final barline, an intrinsic property of the notation itself, discussed forever after in the composer's own terms. Nobody revises a piece's reputation for difficulty the way a climbing community revises a grade. We inherited difficulty from the person who made the object and mostly never questioned it again. Climbers would find this bizarre. They have never trusted a first ascensionist's grade in isolation, because they understand something the concert world mostly does not: the person who made the thing is the single worst-positioned person to know how hard it actually is for everyone else.
SANDBAGGING
Climbers have a specific word for a route that is significantly harder than its stated grade. They call it sandbagged. Sometimes this happens by accident, the first ascensionist was simply strong enough that the route did not feel as hard to them as it will feel to almost everyone who follows. Sometimes it happens by design, an old-school ethic in certain climbing areas that considers an honest, generous grade to be a kind of moral failure, so the numbers stay deliberately conservative and everyone downstream pays the difference in skinned knuckles.
Music has sandbagged pieces too, though we have no word for it and so we rarely notice the pattern clearly. There are scores with unglamorous, almost plain-looking pages that turn out to be exponentially harder to actually inhabit than their visual density would suggest, extended, exposed simplicity that offers a performer nowhere to hide, no flurry of notes to disappear the exact quality of a single sustained pitch into. There are also, and this is the more uncomfortable admission, pieces whose fearsome reputation for difficulty is inherited rather than earned, passed down through decades of program notes that keep repeating the same claim about how hard the piece is until nobody checks whether that claim still holds against how playable it has actually become inside the specialized training that now exists for exactly this repertoire. We do not have the climbing community's habit of publicly, collectively re-litigating these claims. We mostly just repeat the grade the first ascensionist assigned, forever.
ONSIGHT, REDPOINT, BETA
Here is the part of climbing's vocabulary I think matters most, and the part I think exposes something genuinely uncomfortable about how we talk about difficult performances.
An onsight is when a climber completes a route on the very first attempt, with zero prior knowledge of the sequence, no falls, no information from anyone who has already solved it. It is the purest possible expression of meeting difficulty in real time, cold, with nothing between the climber and the problem. A redpoint is different. It means the climber has succeeded after previous attempts, previous falls, previous study of the route, and can now execute the sequence cleanly because they have already solved it in private and are now demonstrating the solution. Both are real achievements. Climbers do not consider a redpoint lesser. But they never, ever confuse the two, and every serious climbing conversation specifies which one happened, because the two performances are answering completely different questions about the climber's relationship to the difficulty.
Then there is beta, the specific sequence of holds, weight shifts, and body positions that solves a given route, often discovered by the first successful climbers and then passed down, sometimes freely shared, sometimes guarded, always understood as inherited knowledge rather than something each new climber must rediscover alone.
Now consider how new music discourse handles this same distinction, which is to say, it mostly does not. A performer plays a work of extreme notational difficulty at a premiere, having rehearsed it in private for months, having received coaching, fingerings, and interpretive guidance from a teacher who studied it with the composer, having effectively inherited beta through a specific pedagogical lineage, and the resulting performance is very often praised in language that implies something closer to an onsight, a live confrontation with impossibility, happening in front of us, in real time, for the first time. It is not that. It is frequently, and honorably, a redpoint, executed beautifully, built on real labor, but built on labor that happened somewhere the audience cannot see, using solutions the performer did not discover alone.
I do not say this to diminish redpoint performances. A clean redpoint of something genuinely hard is a real achievement and deserves real praise. I say it because I think our critical language quietly collapses the distinction climbers would never tolerate collapsing, and that collapse changes what we think we are witnessing. When we praise a performance as though difficulty is being encountered live, when it is in fact being demonstrated after being solved, we are not lying exactly, but we are letting the audience believe something about the nature of the moment that climbers, of all people, would immediately correct.
THE ROUTE SETTER'S FEEDBACK LOOP
Indoor climbing gyms employ professional route setters, whose entire job is to design difficulty on purpose, calibrated to a specific intended grade, and then watch. They watch climbers attempt the route. If nobody can do the crux move at the intended grade, or if everyone finds it trivially easy compared to the number on the tag, the route setter does not shrug and move on. They often reset the route. They adjust a hold's angle, change a foot placement, recalibrate, because the entire discipline of route setting assumes that a difficulty curve is a hypothesis, tested against real bodies, and revised when the hypothesis is wrong.
I raised something adjacent to this in the essay before this one, about games and feedback loops, but climbing route setting makes the point in a way I find even more useful, because it is not metaphorical, it is a literal profession built entirely around treating difficulty as revisable. A composer publishes a score and that score's difficulty, whatever it turns out to actually be once real performers with real bodies get their hands on it, is essentially permanent. There is no reset. There is no professional feedback loop in which the composer watches fifty different performers attempt the passage and adjusts the notation based on where they all, independently, hit the same unexpected wall. A few composers do revise editions based on performer feedback, this happens, but it is the exception treated as generosity rather than the standard practice treated as basic professional discipline, which is exactly backward from how climbing does it.
What would it mean to treat a score's difficulty the way a route setter treats a boulder problem, as a working hypothesis rather than a finished pronouncement, checked against the actual, accumulated experience of everyone who attempts it, open to genuine revision when the accumulated evidence says the hypothesis was wrong.
THE CRUX, NOT THE GRADE
I want to end with the word I think is actually more useful than difficulty itself, because it is more honest about where difficulty lives.
A crux is not the whole route. It is the single hardest sequence within it, often shockingly brief, sometimes a single move, surrounded on both sides by climbing that is merely demanding rather than at the absolute limit. Climbers do not describe a whole route as uniformly, undifferentiatedly hard. They describe its shape. This part is approach. This part is the crux. This part is the exposed, easier climbing after the crux where you still have to hold it together because a fall here would be worse, even though the moves themselves are simpler.
Music criticism, and the original essay this series responds to, mostly still talks about difficulty as a blanket property, a piece is difficult, a passage is difficult, in a way that treats the whole terrain as flat. I think naming the crux, the specific two bars where the actual limit lives, surrounded by writing that is merely serious rather than impossible, would be a more honest way to talk about almost every hard piece in the repertoire, and it would help performers prepare with more precision than a generalized reputation for difficulty ever could.
Every difficult score has a shape. Somewhere in it is the actual crux, and everywhere else is approach and exposure. The composer, unlike the route setter, rarely gets to stand at the base and watch fifty people fall at the same three notes before finally understanding exactly where their own crux was. That is not a failure of the composer. It is simply a discipline that has not yet built itself a feedback loop as honest as the one climbers built for themselves, one grade, one route, one argument in the gym at a time.






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