Gidon Kremer, the Latvian violinist and conductor, is gathering together a group of like-minded artists to perform a concert in support of Russian oppositionists who have been suppressed or jailed by President Vladimir Putin.

Kremer names pianists Martha Argerich and Khatia Buniatishvili, conductor Daniel Barenboim and cellist Nicolas Altstaedt as confirmed participants in the event. Among the pieces to be performed is Giya Kancheli’s Angel of Sorrow, written to mark the fiftieth birthday of Mikhail Khodorkovsky.

Two years ago Kremer participated in Musica Liberat, a concert dedicated to Mikhail Khodorkovsky and Platon Lebedev. At that time, Kremer wrote on CNN:

“I think that in standing up for Mikhail Khodorkovsky and Platon Lebedev, imprisoned in Russia on trumped-up charges of fraud, all of us hope to focus attention on the Russian leadership’s willful ignorance of the law. Without legal guarantees, everybody in the state could find themselves unlawfully charged with crimes they didn’t commit. Khodorkovsky and Lebedev have spent eight years in prison on such charges, and could face many more, in order to silence their support of democracy.”

Read the full interview with Gidon Kremer in German Die Welt.

Read the full piece written by Kremer on CNN here.