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Must individual items in a concert programme form a coherent whole? Not necessarily, but here a Wagner overture, a cello concerto inspired by environmental concerns and an early Mendelssohn symphony don't justify the LPO's marketing.

Formed under the artistic direction of Yo-Yo Ma, the Silk Road Ensemble, a collective of distinguished performers and composers from more than 20 countries in Asia, Europe and the Americas, took to the stage at Carnegie Hall Wednesday evening. Looking up at Perelman stage, you'd never guess the group was no more than a small ensemble.