Curious about music from the Soviet Union

Just some thoughts:

Evgeny Golubev - I have quite a bunch of his music, i.e. Symphonies Nos. 5&7, Ukrainian Rhapsody, Piano Concertos Nos. 1, 2&3, Violin Concerto, Cello Concerto, "Return of the Sun" Oratorio, Piano Quintet, Harp Quintet, String Quartets Nos. 4, 10, 11&15, Cello Sonata, a Song Cycle and some Piano Pieces, among the Sonata No. 4. Several of these works have appeared on CD (mainly PC #3 & Piano Sonata #4, Cello Concerto, the two quintets and SQ #4). He was a student of Myaskovsky and I think there are some echoes of his teacher's music in his own profound and well-written output (though he was also interested in impressionism and went further in terms of style).

Qara Qarayev - I have his Symphonies Nos. 1&3, his Violin Concerto, two Ballet Suites, some other orchestral works and a Violin Sonata. There is quite a cut in his output in the 1960s, when he became interested in modern techniques. For example, his Third Symphony and Violin Concerto work with dodecaphonic techniques.

Vladimir Fere - I don't have anything by him, and I don't think much was recorded.

Alexander Mosolov - in fact, I know some of his later pieces. They are much more conventional than the early ones of course, and honestly not very interesting - not because they are conventional (there were many Soviet composers writing in a traditional idiom who composed music well worth listening), but because they are not very inspired and appealing. I must admit I regard his later pieces as below the Soviet average. There is a very lengthy and thin E Major Symphony on disc, for example. I do have the Second SQ but it comes from CD.

Mikhail Alexeev - nothing by him in my collection. There were really thousands of Soviet composers, and thus gaps in the recorded repertoire are inevitable.