How is one supposed to properly sing ‘Polyrhythm’ when the letter R isn’t used in Japanese Pronunciation? The Romanji lyrics are zero help. Need to get into some Japanese Language Classes I think.

リ (Ri) will be spoken as “Li” or “Ri” because L and R are the same letter for them. The way Japanese saying L is [eru]. I guess.
I know Chinese having only one Letter for L and R too and it sounds like an english spoken R