One of the easiest ways to get your children singing in a foreign language is to teach them a song they already know. We have had great success singing “Happy Birthday” in our chosen language. It’s easy, it’s fun, and it’s useful!
This is a video with a native providing a slow pronunciation.
The following is the traditional American happy birthday song with Russian lyrics:
Russians do sing this at birthday celebrations, however, if you ask a Russian what the birthday song is, they might respond with Песенка крокодила Гены. It’s great to learn both!