The SSPX's seminary in Virginia is another excellent example of the classical Solesmes method in practice, one which gets less attention perhaps out of prejudice or political reasons, but they deserve credit. Link.

Mgr Fellay sang Mass yesterday for Our Lady of Compassion, during which he conferred minor orders.

They're up there with the ICRSP, dare I say…

The observation in particular is this: the proliferation of CDs and especially digital music (streaming, downloads, Youtube…) is keeping this style alive in Anglophone countries just as much or more among young (male) Catholics as the same makes possible the spread semiological interpretations, proportionalism, singing according to the Vaticana, and so on (I wish that we had a pithy name for what Pérès does…). And then you get young Americans and so on joining French or Francophone communities (contrary to popular belief, I hesitate to call either the SSPX or the ICRSP "French", but the latter especially is Francophone). Giovanni Vianini did it almost single-handedly, and then you have things like the Fontgombault Assumption album still making the rounds decades later, on top of the New Age craze in the 1990s for Santo Domingo de Silos.

Meanwhile, in France, this is something of a default, so it's a bit rebellious to sing something else on a regular basis, particularly the farther away that you get from Solesmes-style singing (I include using the Triplex for a more Cardinian interpretation here), but I would argue that there is still plenty of momentum for following the classical method — after all, I don't believe that the Schola Saint-Grégoire is officially trad! I know that academics are not-Solesmes, but there's something to be said for "what people actually do", and in France, it's sort of everything but what more traditional researchers and professors would want (and that includes classical Solesmes and Pérès-style singing or even the use of something approaching the Vaticana by Saint-Eugène-Sainte-Cécile — Henri Adam de Villiers often omits the rhythmic signs!)

I suppose that this is my contribution to the "Semaine de la Francophonie"…

the tl;dr is that you can say as much as you like that "Solesmes doesn't use the signs" but they still share essential commitments with this style, and while I believe that digital media is responsible for the spread of semiological and other interpretations among young people, the same is true for Fontgombault and the classical method…