As a remembrance of the tragic events of September 11, 2001, On the Transmigration of Souls, John Adams's musical memorial written for the New York Philharmonic's 2002 anniversary concert, can be heard on WNYC's Evening Music tonight. The program can be heard in the New York area on 93.9 FM and worldwide online at wnyc.org beginning at 7 PM ET.

The Phoenix Symphony, led by conductor Michael Christie, performs the piece in two sold-out concert at Symphony Hall in Phoenix, Arizona, tonight and tomorrow night. On the Transmigration of Souls will be paired with Beethoven's Ninth Symphony, as it was when the New York Philharmonic and conductor Lorin Maazel premiered the piece seven years ago.

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"Sounding like an earlier version of blues, country or bluegrass—or perhaps the source of all three," writes reporter John Staton of the region's Star-News, "the music of the Carolina Chocolate Drops is at once a throwback as well as something new for modern audiences." In a feature profile of the group, Staton writes of the band's live performances that elements are "so beautiful and spontaneous it's difficult to describe." There's much more at starnewsonline.com.

The Carolina Chocolate Drops perform at the Kenneth Lanier Performing Arts Center at Topsail High School in Hampstead, North Carolina, not far from the band's home base of Durham, on Saturday night. Next up, the band helps celebrate the 50th anniversary of the Chapel Hill Public Library on Sunday with Long Story Short, a sold-out gathering of writers and musicians to benefit the library. The day's activities include author readings, a BBQ supper, and a performance by the Carolina Chocolate Drops, all taking place at The Barn at Fearrington Village in Pittsboro, North Carolina.

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"The great guitarist and composer Bill Frisell cannot be categorized," says The New Yorker. "His latest album, Disfarmer, is a collection of gentle instrumental musings inspired by the arresting photographs of a nineteen-thirties Arkansas portraitist." Audiences at the Ellnora Guitar Festival (formerly known as the Wall to Wall) will be able to witness the Disfarmer Project from which the album developed, when Frisell, Viktor Krauss, Greg Leisz, and Eyvind Kang (replacing Jenny Scheinman, who is on maternity leave) perform at the Krannert Center of the University of Illinois in Urbana Saturday.

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Kronos Quartet begins its 2009/10 season with two performances at the Wratislavia Cantans Festival in Poland this weekend. The first is at the Church of Peace in Swidnica tonight, a program closing with Steve Reich's Different Trains, and the second is at Wroclaw Philharmonic Hall in Wroclaw, including John Adams's Fellow Traveler and Aleksandra Vrebelov's ... hold me, neighbor, in this storm ..., the latter off Kronos's latest Nonesuch release, Floodplain.

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"Have you ever been somewhere and thought to yourself, 'There is no place in the world I would rather be than right here?'" asks JamBase, answering that a recent Low Anthem show with Surprise Me Mr. Davis was one such show. This weekend, The Low Anthem plays two sets at the End of the Road Festival at the Larmer Tree Gardens in Dorset, England, headlining the Tipi Tent tonight and hitting the Garden Stage tomorrow afternoon. On Sunday, it's another festival set at the Bestival at Robin Hill Country Park on the Isle of Wight.

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Brad Mehldau continues his solo tour of South America with performances each weekend night at the SESC Santana in São Paolo, Brazil. There's one more concert at the Teatro do Sesi in Porto Alegre, Brazil, on Monday, before the tour's end.

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"The prodigiously gifted trumpeter Nicholas Payton has a fine recent album, Into the Blue," writes the New York Times's Nate Chinen, "that neatly synthesizes his dual allegiance to hard bop and groove music." Payton and his band are in residence at the Iridium all weekend, playing multiple sets each weekend night.

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Steve Reich was honored earlier this year with the Pulitzer Prize in Music for his piece Double Sextet. This weekend, the Guggenheim Museum's Works and Process series presents new works by choreographers Larry Keigwin and Peter Quanz set to the piece. The works will be performed by Keigwin + Company and dancers from the Royal Winnipeg Ballet Friday night (7:30 PM), Saturday afternoon (2 PM), and Saturday night (7:30 PM). The composer will participate in a discussion for the last performance. For more information, visit guggenheim.org.

Also in New York Saturday tonight, Reich's Music for 18 Musicians will be performed by Mantra Percussion and Friends at Le Poisson Rouge as part of the the Moving Sounds 2009 Festival.

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Allen Toussaint performs at Bass Performance Hall in Ft. Worth, Texas, tonight, with fellow pianist Marcia Ball opening. The next day, Toussaint headlines the sixth annual Silver Spring Jazz Festival, held, free, in downtown Silver Spring, Maryland, and touted as "Silver Spring's Biggest Event of the Year." On Sunday, Allen returns to his seat at the Joe's Pub piano for another noon set at the downtown New York City venue.