One of the pioneering period-instrument string quartets, Quatuor Mosaïques have opened our ears to new ways to hear music that we thought we knew so well. Their recordings of Beethoven’s string quartets were a revelation, and now, to mark the group’s 30th anniversary, they return to Beethoven’s so-called “Late Quartets”—works that stretch the form to its limits, both structurally and expressively. The Mosaïques have lived long with these pieces, and it shows in every bar—it all feels so right. Nothing is done for show; everything to dig deeper into music that seems to gaze down into the abyss or up to the heavens.