Kronos Quartet performs the first of four performances over as many nights in Carnegie Hall's Zankel Hall tonight as part of the Hall's season-long Perspectives: Kronos Quartet. Tonight, Kronos and composer Terry Riley celebrate 30 years of collaboration, which has resulted in 26 new works. On the program is the New York premiere of Transylvanian Horn Courtship, which features a set of string instruments with metal horns created especially for Kronos by MacArthur Fellow Walter Kitundu; the world premiere of Another Secret eQuation; the New York premiere of The Welcoming Baptism of Sweet Daisy Grace; as well as selections from Sun Rings and Salome Dances for Peace. Joining the Quartet for tonight's performance is the Young People’s Chorus of New York City, led by Artistic Director Francisco J. Núñez.

Tomorrow night's concert, titled Playing with Toys & Technology, uses an orchestra of toys, instruments constructed from remnant military materials by children from Angola, and technology capable of capturing tones emitted by the desert to revisit the joy in discovering new sounds through new means. The program features toy piano virtuoso Margaret Leng Tan and Portuguese instrument builder Victor Gama, and a new work for Kronos by J. G. Thirlwell inspired by environmental acoustic phenomena.

On Saturday, Inuit throat singer Tanya Tagaq joins Kronos for the New York premiere of Derek Charke's Tundra Songs, along with other works featuring the  varied soundscape of the Arctic Circle, through the use of traditional folk instruments and contemporary electronic means alike.

In the final Kronos performance at Zankel, this Sunday, titled Music Without Borders, the Quartet is joined by the Alim Qasimov Ensemble from Azerbaijan for the US premiere of "Getme, Getme," as heard on Kronos's most recent Nonesuch release, Floodplain. (You can watch the groups' 2008 performance of the piece at nonesuch.com/media.) Ever the musical explorers, Kronos further examines the role of musicians as ambassadors of culture with additional guest musicians from Korea and Afghanistan.

Additional events in Perspectives: Kronos Quartet, starting next week, include a weeklong Professional Training Workshop for string quartets and pipa with pipa master Wu Man, with a public master class and a final concert by the participating musicians.

For more information on all of these events, visit carnegiehall.org. For information on other upcoming Kronos performances, visit nonesuch.com/on-tour.