I published two video clips from that movie in 2009. Some good sounding tracks were unarchived since then. The OST is not complete yet — a beautiful psychedelic instrumental is missed at least — but it is much better that nothing. Music by David Tukhmanov, performed by Ukrainian band Vodograi — an explosive mixture!
Не пропустите качественные оцифровки OST “Дорогой мальчик”. Отличные композиции Давида Тухманова в жёстком исполнении грувового ВИА Водограй.
Alexandra Pakhmutova is a famous soviet composer. She wrote many many “propaganda” songs but there were many nice stuff among it (instrumentals in particular). There are two tracks below and I'll try to upload more cool tracks of her later when find their good quality copies.
Kreis — Старый Алекс и Останкино.mp3 1978. Performed by a popular East German band in a disco key; they sings it in Russian with appreciable accent. Yuri Antonov performed the song also — a rare case when the composer performed a song written by someone else.
Three tracks from CD compilation "Українські Вокально-Інструментальні Ансамблі" (Ukrainian vocal-instrumental ensembles). Ukrainian bands of the 70's is something special among the soviet music scene: with their catchie funk-arranged folk melodies.