One of the newest additions to the Nonesuch artist roster, Christina Courtin—her Nonesuch debut is due out next year—performs tonight at 92YTribeca, the brand-new space for the 92nd Street Y's Makor program in downtown Manhattan. She is joined on the bill by Brooklyn singer/songwriter Ryan Scott. And next month, for the first three Tuesdays, Christina will perform in Brooklyn for a residency at Pete's Candy Store. 

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The Met Opera premiere production of John Adams's Doctor Atomic concluded a little over a week ago, and now Atlantans get to take in a staged version of the opera when the Atlanta Symphony Orchestra, led by conductor Robert Spano, perform a staged version at Atlanta Symphony Hall tonight and Sunday afternoon. (Spano conducted Chicago's Lyric Opera production last season.) The performances feature Met principles Gerald Finley and Eric Owens, along with Adams regulars Jessica Rivera (A Flowering Tree) and James Maddalena (The Death of Klinghoffer, Nixon in China).

In between those performances, Adams's "Coast," from Hoodoo Zephyr, will be performed a world away on Saturday, in Alarm Will Sound's program at Glinka Philharmonic Chamber Hall in St. Petersburg, Russia. It's part of the Pro Arte Institute's contemporary music festival American Season in Petersburg, for which Alarm Will Sound played Adams's Son of Chamber Symphony at the Hermitage Theatre last night, almost exactly a year after the ensemble gave the piece its world premiere at Stanford University.

On Sunday, Esprit Orchestra, Canada's only full-size new-music orchestra, performs Adams's Short Ride on a Fast Machine, at the St. Lawrence Centre for the Arts' Jane Mallett Theatre in Toronto, on a program titled Inspired by Traditions. The orchestra's music director and conductor, Alex Pauk, tells the Toronto Star: "The entire score is made up of rhythmic units that people could hum or tap out. It's the way they're layered and the difficulty of playing them on orchestral instruments that's difficult ... Adams take it to another level by making it really fast, which makes it particularly exciting."

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The Black Keys continue their European tour this weekend with two stops in the Netherlands—Utrecht's Tivoli tonight, with opener Liam Finn; and The Hague's Royal Theatre on Saturday for the Crossing Border Festival, with The Cave Singers—and then to Belgium for a Sunday night show with Finn again at the Vooruit Arts Centre in Ghent.

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Philip Glass's Symphony No. 3 continues to set the scene for Sweden's Royal Ballet performances of choreographer Nils Christe's work Moving Glass, Saturday night at the Kungliga Operan in Stockholm. Additional performances will take place next week.

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Fred Hersch is joined by fellow pianist Christopher O'Riley, host of PBS's From the Top, for Heard Fresh: Music for Two Pianos, a special double recital tonight at Duke University's Page Auditorium in Durham, North Carolina. The two participate in a free, pre-concert lecture-demonstration in the auditorium focused on their respective approaches to composition.

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Robin Holcomb, who released four albums on Nonesuch, from 1990's self-titled record through 2002's The Big Time, is in New York for two performances this weekend. Tonight she plays a set at Joe's Pub with Doug Wieselman on guitar, clarinet, and sax, and Tony Scherr on bass and vocals. Tomorrow night she and Wieselman are joined by Marty Ehrlich (clarinets, saxophones), David Hofstra (bass), and Kenny Wollesen (drums) to showcase some new tunes at The Stone, where John Zorn is artistic director.

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k.d. lang performs a special concert to benefit Ari Bhöd, the American Foundation for Tibetan Cultural Preservation. Opening for k.d. tonight, as on this year's Watershed tour, is pianist Dustin O'Halloran. The benefit concert will be held Saturday night at the Long Beach Terrace Theater in Long Beach, California.

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Punch Brothers continue their US tour with just one stop this weekend, at the Walton Arts Center in Fayetteville, Arkansas, a show previewed in today's Arkansas Traveler.

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Joshua Redman performs in the concert halls of Scandinavia with the Trondheim Jazz Orchestra both this weekend and next. First up are two shows in Norway: tonight at Bergen's Sardinen USF, and tomorrow night at Folken in Stavanger.

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Steve Reich's Double Sextet receives its European premiere tonight at the Cornerstone Festival in Liverpool, England, in a program by eighth blackbird. The ensemble, which recently performed in Chicago with Glenn Kotche, gave this piece its world premiere earlier this year at the University of Richmond. The program receives an encore performance in its Dutch premiere on Sunday at DeDoelen in Rotterdam.

Performances of Belgian choreographer Anne Teresa De Keersmaeker's dance piece Reich Evening, featuring live performances of Reich's Four Organs, Drumming, and Piano Phase, by the Ictus Ensemble, continue this weekend, tonight and tomorrow night, at Kaaitheater (de Munt), in Brussels.

Also on Saturday, Doug Varone and Dancers bring Varone's piece Alchemy, set to Reich's Daniel Variations, comes to The Pittsburgh Cultural Trust's Byham Theater. Also on the program is the piece Lux, set to Philip Glass's The Light. In Saint-Nazare, France, Ensemble Intercontemporain performs Reich's Different Trains on a program with Geroge Crumb's Black Angels.

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Dawn Upshaw and violinist Geoff Nuttall bring Peter Sellars staging of György Kurtág's Kafka Fragments to a sold-out Zellerbach Playhouse in Berkeley, California, Sunday night. In this week's performance of the piece at L.A.'s Disney Hall, says Los Angeles Times music critic Mark Swed, Dawn "offered one of the great musical and dramatic performances of our time ... She sounded spectacular." He concludes: "[E]verything about Kafka Fragments, from Kurtág's smallest musical setting to Upshaw's incendiary singing and acting, was a brilliant response to the most pressing issues of existence."

Tickets for a second performance at the Zellerbach on Monday are still available as of Friday afternoon at calperfs.berkeley.edu.