If you wish Russian folk songs, I'd recommend you the group "Белое злато". Here's a sample
I do understand Russian and I love that language but I cannot speak well. However, I like to listen to European music and I realised that I don't know that many Russian songs.
Thank you everyone ☺
Something else. Though Russian is not pointed in your profile, but if you can understand this language at least approximately I'd very much recommend the songs from 1960x by Лариса Мондрус, Муслим Магомаев, Майя Кристалинская, etc. In my impression, it was the time in the USSR when a performance of a famous singer combined obligatory all the three pleasures: really professional vocal skills, amazing inspiring lyrics and amazing emotional expressions. I didn't live in that time but I enjoy it very much:
