Kondrashin gave two performances of the Thirteenth Symphony; a third was scheduled for 15 January 1963. However, at the beginning of 1963 Yevtushenko reportedly published a second, now politically correct version of "Babi Yar" twice the length of the original. The length of the new version can be explained not only by changes in content but also by a noticeable difference in writing style. It might be possible that Yevtushenko intentionally changed his style of narrative to make it clear that the modified version of the text is not something he initially intended. While Shostakovich biographer Laurel Fay maintains that such a volume has yet to surface, the fact remains that Yevtushenko wrote new lines for the eight most offensive ones questioned by the authorities. The rest of the poem is as strongly aimed at the Soviet political authorities as those lines that were changed so the reasons for these changes were more precise. Not wanting to set the new version to music, yet knowing the original version faced little chance of performance, the composer agreed to the performance of the new version yet did not add those lines to the manuscript of the symphony.