It's the summer festival season across the Northern Hemisphere, and Nonesuch artists are represented across the board this weekend.

EUROPE

As noted earlier today in the Nonesuch Journal, the North Sea Jazz Festival in Rotterdam, Netherlands, plays host to more than a half dozen Nonesuch artists this weekend. Joshua Redman, who is this year's North Sea Jazz Artist in Residence, performs on each festival day with varied musical projects, including James Farm. Also performing are Pat Metheny with his Unity Band, the Brad Mehldau Trio, Punch Brothers, Lianne La Havas, and World Circuit/Nonesuch artists Fatoumata Diawara and Oumou Sangare.

Just two countries away in Denmark, the Roskilde Festival is under way and features a headlining set from Björk, who helps close out the weekend's activities with a Sunday night set on the Orange stage featuring music from Biophilia.

Dr. John is at Roskilde on Sunday as well, performing with his band the Lower 911 featuring Jon Cleary at 2 PM on the Arena stage. Before then, it's another festival set when the group hits the Lugano Estival Jazz in Lugano, Switzerland, tonight.

Punch Brothers perform on Roskilde's Pavilion stage tonight. The set marks the start of the band's European tour, which takes them to KNUST in Hamburg on Saturday, and the aforementioned North Sea Jazz Festival on Sunday.

The Low Anthem plays Roskilde's Pavilion at 5:30 PM on Saturday.

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Also in Denmark this weekend is the Copenhagen Jazz Festival, where the Brad Mehldau Trio performs on Saturday, following tonight's show at De Bijloke Muziekcentrum in Gent, Belgium, and preceding their Sunday set at North Sea Jazz.

The Pat Metheny Unity Band, featuring Chris Potter on saxophone, Antonio Sanchez on drums, and Ben Williams on bass, performs at Herdecke Saal in Herdecke, Germany, tonight, before its North Sea Jazz Festival set on Saturday and its show at Barbican Hall in London on Sunday.

Also in London this weekend is composer Steve Reich, who concludes his three-city tour of Europe with Bang on a Can All-Stars at the London Pleasure Gardens for the Bloc Weekend festival tonight. The all-Reich program includes a performance of Clapping Music on which the composer performs.

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NORTH AMERICA

Europe is not alone in its bounty of festivals. In North America, the Vancouver Island Musicfest gets under way in Courtenay on Vancouver Island, British Columbia, today, and includes performances from three Nonesuch artists: k.d. lang and the Siss Boom Bang, Emmylou Harris, and Laurie Anderson.

Canadian-born k.d. lang and her band the Siss Boom Bang headline the first night of the festival tonight with a 10:30 PM set on the main stage; Emmylou Harris follows on Saturday with a 9 PM set; and Laurie Anderson plays on Sunday's closing night at 6 PM, presenting her latest performance piece, Dirtday!

lang and the Siss Boom Bang remain in British Columbia for the whole weekend, heading over to mainland Vancouver for shows at the Commodore Ballroom Saturday and Sunday, with Milk Carton Kids opening both nights.

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Continuing on the Canadian festival front, Carolina Chocolate Drops have a full schedule of music-making ahead at the Winnipeg Folk Festival, performing four times on different festival stages in the beautiful Birds Hill Provincial Park over the weekend. The band kicks things off on the Green Ash stage Saturday at 12:45 PM, performing in a show titled Roots Down, hosted by Chic Gamine, with Dry Bones performing as well. Later that day, the Chocolate Drops open the evening's Main Stage activities with a 6 PM performance.

On Sunday, the shows continue with an 11 AM performance on the Big Blustem stage for a show titled This Train Is Bound for Glory, also hosted by Chic Gamine, with Ruthie Foster performing as well, and a 4 PM show cheekily titled Old Time Music: It's Better Than it Sounds, hosted by the Atomic Duo, with Pharis and Jason also performing.

Billy Bragg, who performed at the Winnipeg Folk Festival last night, heads next to the Mariposa Folk Festival at Tudhope Park in Orillia, Ontario, for a set on Sunday.

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South of the 49th parallel, pianist Jeremy Denk helps kick off the Bellingham Festival of Music, joining the festival orchestra, led by Michael Palmer, for a performance of Mozart's Piano Concerto No. 21 in C Major, KV 467, at the Western Washington University Performing Arts Center in Bellingham, Washington, tonight.

Much further down the West Coast, Sara Watkins celebrates the season with a free set for the Summer Music Festival at Memorial Park's Levitt Pavilion in Pasadena, California, tonight.

And Back East, Shawn Colvin plays a special non-festival show on the nonetheless idyllic island of Nantucket, Massachusetts, at the newly reopened Dreamland Theater Saturday night.