I found that suspicious about Shim Soo-bong.

‌I happened to see the Namuwiki document for "A Million Roses" a while ago, where it said Shim Soo-bong remade it because her husband told her about it as a Russian folk song.
In reality, Im Ju-ri's version had already become a huge hit by then, so there was no way she wouldn't have known.
I'm not sure if she was intentionally ignoring it or what the situation was.