Unknown Instrumental(s) 16 - VHS

Please help me to identify these instrumental samples!
OP (STV-ANDREY-VHS) : https://www.youtube.com/watch?v=ySjFy4jKBYw
From a private collection.
00:00 Sample 1
00:35 Sample 2
04:19 Sample 3

Also posted on WZS:
www.watzatsong.com/en/name-that-tune/794129.html
www.watzatsong.com/en/name-that-tune/794130.html
www.watzatsong.com/en/name-that-tune/794131.html

Видео Unknown Instrumental(s) 16 - VHS канала Anon0122