In 1919, at the age of 13, he was allowed to enter the Petrograd Conservatory, then headed by Alexander Glazunov, who monitored Shostakovich's progress closely and promoted him.
He was allowed to enter the Petrograd Conservatory. This was at the age of 13. This was in 1919. He was then headed by Alexander Glazunov. This was at the age of 13. This was in 1919. He was promoted him. This was at the age of 13. This was in 1919. Alexander Glazunov monitored Shostakovich's progress closely.