British singer, songwriter, and guitarist Lianne La Havas made her way across the Atlantic for the launch of a month-long tour of North America, featuring music from her debut album, Is Your Love Big Enough? The 19-city tour starts with a St. Patrick's Day performance at the House of Blues' Cambridge Room in Dallas Sunday night and includes sold-out shows in Los Angeles, San Francisco, Chicago, Boston, Atlanta, and New York and stops across the country.

The tour follows La Havas's debut at the SXSW Music Conference in Austin, Texas, where she performed at the Nikon Warner Sound Showcase and the AUSTINROX showcase yesterday.

SXSW attendees have seen a number of performances from Nonesuch artists since the conference began earlier this week, and the music-making continues this weekend with more from Devendra Banhart, Iron and Wine, Nataly Dawn, and Emmylou Harris and Rodney Crowell.

Emmylou Harris and Rodney Crowell kick off today's events with a set at the Radio Day Stage of the Austin Convention Center at 12:45, followed immediately by Iron and Wine on the stage at 1:10. Harris and Crowell, whose duets album, Old Yellow Moon, was just released on Nonesuch, then head over to Waterloo Records to play a free show this evening on the store's outdoor stage, as part of Waterloo’s SXSW 2013 Day Party series. The show will stream live online waterloorecords.com.

Later this evening, Nataly Dawn performs songs from her Nonesuch debut album, How I Knew Her, at the SXSW Official Showcase at Creekside at the Hilton Garden Inn.

The Old Yellow Moon duo is back on stage Saturday morning for a live broadcast on Austin radio station KGSR, 93.3 FM, from the Great Room at the W hotel at 11 AM. On Sunday, Harris and Crowell head up north to St. Louis to launch their US tour with the Richard Thompson Electric Trio at the Peabody Opera House.

The whirlwind Nonesuch run at SXSW 2013 comes to a close in style with back-to-back performances from two Nonesuch artists in the Saturday night showcase at Austin's Central Presbyterian Church, when Devendra Banhart performs songs from his new album, Mala, at 11 PM and Iron and Wine brings things to a close with songs from the forthcoming album Ghost on Ghost in a midnight set.

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John Adams, who conducted the Los Angeles Philharmonic New Music Group in his Chamber Symphony last night at Barbican Hall, returns to the Hall on Saturday for the European premiere of the staged production of his oratorio The Gospel According to the Other Mary, directed by his frequent collaborator Peter Sellars. Gustavo Dudamel conducts the Los Angeles Philharmonic. There will be a pre-concert talk in the Hall with Adams, Sellars, and the Barbican's Head of Music Angela Dixon. Prior to both events this evening, Adams and filmmaker Mark Kidel introduce a screening of Kidell's new documentary Road Movie: A Portrait of John Adams in the Barbican's Cinema 2.

There's more on the Gospel in a podcast with the Adams, Sellars, and mezzo-soprano Kelley O’Connor, who plays the oratorio's Mary, at barbican.org.uk. You can read Gramophone's feature on Adams and his new piece at gramophone.co.uk.

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Alarm Will Sound gives the US premiere of Radio Rewrite, Steve Reich’s new ensemble work, which draws inspiration from songs by Radiohead, at Stanford University's Bing Concert Hall Saturday night. It's part of an all-Reich program that opens with the composer performing in Clapping Music, and also includes Piano Counterpoint, City Life, Four Genesis Settings from The Cave, and New York Counterpoint. Following last week's world premiere of Radio Rewrite in London, the Observer described Reich's music as “bliss” resulting in “transcendent joyfulness.”

On Wednesday, Alarm Will Sound brings Radio Rewrite to Sheldon Concert Hall in St. Louis on a program that also features the world premiere of scenes from Irish composer Donnacha Dennehy's The Hunger, based on the Irish famine.

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Pianist Jeremy Denk conducts a master class at Clayton State University in Morrow, Georgia, tonight. The event precedes Denk's performance at the university's Spivey Hall on Saturday. On the program is Beethoven's Sonata No. 32 in C minor, Op. 111—which he performs on his 2012 Nonesuch debut Ligeti/Beethoven—as well as works by Liszt, Bartók, and Bach.

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New Orleans legends Dr. John and Allen Toussaint bring their musical gumbo to the Northeast for a special double bill at The Town Hall in New York City Saturday night. Each also headlines his own show tonight, with Dr. John at the Seneca Niagara Casino & Hotel in Niagara Falls and Toussaint at The Hamilton in Washington, DC.

"Last year, Dr. John, the genre-bending singer-songwriter, pianist, and burly spirit animal of New Orleans, had one of his best years in decades by stretching out a bit," writes the New Yorker in a preview of Saturday's show. Citing his "universally acclaimed" Nonesuch debut album, Locked Down, the piece explains: "He travelled to Nashville and teamed up with Dan Auerbach, of the Black Keys, to record Locked Down, an album that fused his signature voodoo funk with some far-out world-music sounds."

Allen Toussaint made his Nonesuch album debut with the release of his critically acclaimed salute to his New Orleans forebears, The Bright Mississippi, in 2009.

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On Saturday, Audra McDonald headlines at the Mizner Park Amphitheater as part of the seventh annual Festival of the Arts in Boca Raton, Florida, a ten-day celebration of music and culture.

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Brad Mehldau continues his Mehliana duo tour with drummer Mark Guiliana at the Blue Note in Milan tonight and Den Atelier in Luxembourg on Saturday.

The Financial Times gives four stars to the duo's recent performance for an "enthralled" London audience. In all his collaborative efforts of late, "Mehldau has shown an extraordinary sensitivity to his collaborator’s oeuvre without over-imposing his will or losing his identity," writes the paper's Mike Hobart. And still, with Mehliana, "Mehldau’s musical personality remained undimmed. The classical cadences and snippets of tune, multi-layered textures and sense of unfolding narrative were as imperious as ever, and with Guiliana he created a series of unfolding, rhythmically compelling vignettes." Read the full review at ft.com.

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Sara Watkins continues her US tour with two shows in the Midwest this weekend: at the Redstone Room in Davenport, Iowa, tonight, and the Majestic Theatre in Madison, Wisconsin, on Saturday.