ROCKPORT — Chamber music necessitates a certain compromise between the individual and the collective . . . actually, that platitude crumbles with the Boston Trio, a chamber music group that is often at its best when its players are behaving most like soloists. When that proclivity intersects with repertoire that thrives on simultaneity — say, Charles Ives’s Piano Trio, which the group played in Rockport on Thursday — the results are breathtaking.
Ives’s college-days reminiscence replaces nostalgia with a sense of the brain’s unruly way of pulling up memories. The almost harshly Romantic opening reimagines earnest student discussions and the fraught sense of importance that drives them. Violinist Irina Muresanu and cellist Allison Eldredge made their arguments with tensile, generously bowed zeal; pianist Heng-Jin Park was an eloquent moderator, shadowing the conversation, steering the debate toward sonorous verities.