To open its 2025-26 season, the Princeton Symphony Orchestra is offering a rare opportunity to experience an established masterpiece from two very different perspectives.

Johannes Brahms’ Piano Quartet in G minor of 1861 was orchestrated by Arnold Schoenberg in 1937. Brahms was 28 when he wrote it. At the time of its transmogrification, Schoenberg was 63.

Despite his notorious reputation as the godfather of dodecaphonic music, Schoenberg greatly admired Brahms and indeed would celebrate him, emphasizing his underappreciated genius as a musical adventurer, in a series of 1947 talks titled “Brahms the Progressive.”

Schoenberg’s reimagining of the piano quartet is warm and affectionate. For most of the work, he manages a pretty good Brahms impression, if not a slavish one. It’s hard to imagine Brahms ladling on the percussion quite like that in the “gypsy rondo” finale. Furthermore, perhaps disorientingly, there is no piano in it. So it’s not Brahms, exactly, but it IS entertaining. Otto Klemperer, who conducted the premiere of the hybrid in Los Angeles, on Brahms’s birthday anniversary, May 7, 1938, paid tribute to Schoenberg’s accomplishment. “You can’t even hear the quartet,” he declared, “so beautiful is the orchestration.”

Brahms-Schoenberg will make up the second half of this weekend’s Princeton Symphony Orchestra concerts. The program will also include Antonín Dvořák’s Violin Concerto, with soloist Aubree Oliverson, who charmed audiences last year with her performances of the Tchaikovsky concerto. The concerts will open with “Orpheus’ Comet” by Bulgarian composer Dobrinka Tabakova.

To get the Brahms fresh in our ears and enhance our appreciation of Schoenberg’s achievement, the PSO will present Brahms’ Piano Quartet No. 1 in its original guise on Thursday night, with PSO favorite Natasha Paremski, along with violinist Marc Uys, violist Xandi van Dijk, and cellist John-Henry Crawford. The concert will include commentary by PSO music director Rossen Milanov – who, of course, will also conduct the weekend concerts.

Brahms’ chamber work will be performed at Trinity Church Princeton, 33 Mercer St., on Thursday at 7 p.m.

The orchestral program will be presented at Princeton University’s Richardson Auditorium, Saturday at 7:30 p.m. and Sunday at 4 p.m.

At another related event, storyteller Maria LoBiondo will refresh our memories of the Orpheus myth, in preparation for our brush with “Orpheus’ Comet,” as she weaves her spell at Princeton Public Library, this Wednesday at 7 p.m. Attendees will have the opportunity to enter a drawing to win free tickets for this weekend’s concerts.

Don’t look back with regret like Orpheus. For more information, visit princetonsymphony.org.