Fourth Symphony
... that Gavriil Popov's Fourth Symphony was not publicly performed until 2023, 74 years after it was composed?
... that <a href="./Gavriil_Popov_(composer)" id="mwARQ" rel="mw:WikiLink" title="Gavriil Popov (composer)">Gavriil Popov</a>'s <b id="mwARU"><a href="./Symphony_No._4_(Popov)" id="mwARY" rel="mw:WikiLink" title="Symphony No. 4 (Popov)">Fourth Symphony</a></b> was not publicly performed until 2023, 74 years after it was composed?