Fiddler on the roof - If I were a rich man (with subtitles)

See my Sunrise Sunset comment!

PO1 William "Chip" Nagel I'm rich in many ways far more important than $$$.

There is an English grammar lesson from the song. It is if I "were" a rich man meaning a supposition of being wealthy. If I "was" would be incorrect because it means a former conditional state.

https://eslblogs.waketech.edu/esl-english/2017/09/25/if-i-were-a-rich-man/