  We show that Hochschild cohomology of an algebra over a field is a space of
infinity coderivations on an arbitrary projective bimodule resolution of the
algebra. The Gerstenhaber bracket is the graded commutator of infinity
coderivations. We thus generalize, to an arbitrary resolution, Stasheff's
realization of the Gerstenhaber bracket on Hochschild cohomology as the graded
commutator of coderivations on the tensor coalgebra of the algebra.
