It’s very rare in the West, but speakers of tonal languages seem to be much more likely to be able to do it https://www.sciencedaily.com/releases/2009/05/090519

It’s very rare in the West, but speakers of tonal languages seem to be much more likely to be able to do it https://www.sciencedaily.com/releases/2009/05/090519172202.htm https://www.sciencedaily.com/releases/2009/05/090519172202.h...