CLEAN : Tsars of the show: Aussie blokes become unlikely Russian folk heroes

The transcript describes the formation of a choir inspired by a desire to have a Russian choir at a music festival. Due to financial constraints, the idea of creating their own choir emerged. The choir consists of members with varying singing abilities. They learn Russian songs phonetically, often without understanding the lyrics, which leads to interesting cultural exchanges and reactions from Russian audiences in Australia.

What does the speaker mean by saying the songs 'kind of sing themselves'?

What challenges did the speaker face in understanding the songs they were singing?

How did the Russian community in Australia react to the performances?