In the 40+ years I've been playing banjo, I have never heard it characterized as having re-entrant tuning. I'll mention that in the my next jam.

If memory serves me, Microsoft DOS was characterized as non re-entrant code.

Anyway, I play re-entrant tuning because it, along with the clawhammer rhythm, produces the banjo sound I love.

I've heard other instruments clawhammered but it sounds a bit lame to my ears.

Russ (Permanent GUEST and banjo player)