The most famous melody associated with Sportloto is actually an electronic instrumental piece called originally composed by Gershon Kingsley in 1969.
The version heard on Soviet television was typically the cover by the Anarchic System or a similar synthesizer arrangement.
The Internet Archive often hosts older Soviet television broadcasts and soundtracks that may include the original broadcast audio.
It was used during the draw sequences where the balls would tumble in the lotus machine.
Since "Sportloto" itself is a brand and not a musical artist, searching for the specific track name is more effective:
You can find various versions of "Popcorn" on music platforms like Spotify or YouTube Music. Alternative Themes