Thanks for listening.
I agree with you when saying some Bluegrass styles are very close, but this is not true for all of them.
The change at 90 eg, when the Resonator (BLUGR G8) is coming, is very obvious.
The same remark applies to the Banjo Solo ((BG BDBS8).
I prefer to keep the tempo at 210, some Bluegrass songs are very fast.
Best regards