1. Music in the vestiges of Palmyra

2. Russia's Mariinsky Theater performs at the amphitheater of the Syrian city of Palmyra, Syria in this handout picture provided by SANA on May 5, 2016. SANA/Handout via REUTERS

3. Conductor Valery Gergiev leads a concert of Mariinsky Theatre in the amphitheater of the Syrian city of Palmyra, Syria, May 6, 2016. Vadim Grishankin/Russian Ministry of Defence/Handout via REUTERS

4. People, including Russian servicemen, attend a concert of Mariinsky Theatre in the amphitheater of the Syrian city of Palmyra, Syria, May 6, 2016. Olga Balashova/Russian Ministry of Defence/Handout via Reuters

5. Violinist Pavel Miliyukov performs on stage at the amphitheater of the Syrian city of Palmyra, Syria in this handout picture provided by SANA on May 5, 2016. SANA/Handout via REUTERS

6. People, including Russian servicemen, attend a concert of Mariinsky Theatre in the amphitheater of the Syrian city of Palmyra, Syria, May 6, 2016. Olga Balashova/Russian Ministry of Defence/Handout via REUTERS

7. Cellist Sergei Roldugin performs on stage at the amphitheater of the Syrian city of Palmyra in this still image taken from video May 5, 2016. Russian Pool via Reuters TV

8. Russia's Mariinsky Theater performs at the amphitheater of the Syrian city of Palmyra, Syria in this handout picture provided by SANA on May 5, 2016. SANA/Handout via REUTERS

9. Russia's President Vladimir Putin is seen on a screen via a live video link as the Mariinsky Theater performs at the amphitheater of the Syrian city of Palmyra in this still image taken from video May 5, 2016. Russian Pool via Reuters TV

10. People attend a concert by Russia's Mariinsky Theater as they perform at the amphitheater of the Syrian city of Palmyra, Syria in this handout picture provided by SANA on May 5, 2016. SANA/Handout via REUTERS

11. Violinist Pavel Miliyukov performs on stage at the amphitheater of the Syrian city of Palmyra in this still image taken from video May 5, 2016. Russian Pool via Reuters

12. Conductor Valery Gergiev receives flowers at the end of a performance by Russia's Mariinsky Theater at the amphitheater of the Syrian city of Palmyra is seen in this still image taken from video May 5, 2016. Russian Pool via Reuters TV

13. Violinist Pavel Miliyukov performs on stage at the amphitheater of the Syrian city of Palmyra in this still image taken from video May 5, 2016. Russian Pool via Reuters TV

14. Russia's Mariinsky Theater performs at the amphitheater of the Syrian city of Palmyra in this still image taken from video May 5, 2016. Russian Pool via Reuters TV

15. An aerial view as Russia's Mariinsky Theater performs at the amphitheater of the Syrian city of Palmyra is seen in this still image taken from video May 5, 2016. Russian Pool via Reuters TV