  When a graphene layer is stressed, the strain alters the phase an electron
accumulates hopping between sites in a way that can be modeled as arising from
a pseudo-magnetic vector potential. We examine the case of an oscillating
graphene ribbon and explore a new effect - an oscillating resistance arising
from an oscillating quantum Hall effect. This pseudo-magneto-resistance is
large, and depends upon the frequency and the amplitude of the acoustic
oscillations. We calculate the consequences for experiment.
