.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important))You can help expand this article with text translated from the corresponding article in French. (April 2012) Click [show] for important translation instructions. View a machine-translated version of the French article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing French Wikipedia article at [[:fr:Semion Bogatyrev]]; see its history for attribution. You may also add the template ((Translated|fr|Semion Bogatyrev)) to the talk page. For more guidance, see Wikipedia:Translation.
Semyon Bogatyrev

Semyon Semyonovich Bogatyrev (15 February 1890 – 31 December 1960) was a Soviet and Russian musicologist and composer.

He is best known in the West for his completion of Pyotr Ilyich Tchaikovsky's Symphony in E-flat, which the composer had abandoned incomplete in 1892. In 1893 Tchaikovsky used the first movement as source material for his Piano Concerto No. 3 in E-flat, Op. 75. In 1897, Sergei Taneyev used the remaining movements as source for the Andante and Finale for piano and orchestra, which was published as Tchaikovsky's Op. posth. 79.

Between 1951 and 1955, Bogatyrev reconstructed the original Symphony in E-flat as he believed Tchaikovsky might have done had he not become disillusioned with it, and published it as the "Symphony No. 7 in E-flat". It was first performed in Moscow in 1957.

He also wrote a number of his own compositions.