Described are track adapters for snap-fitting within a recess of a track, the track adapters including at least one manually-releasable spring tab comprising a lip and a release tab; and at least one slidably-releasable spring tab comprising a lip, wherein the at least one manually-releasable spring tab and the at least one slidably-releasable spring tab are adapted to deflect inwardly to permit snap-fit insertion of the track adapter into the recess. Also described are light fixtures including a fixture head comprising at least one lamp housing, wherein the at least one lamp housing supports at least one lamp; and a curved arm connecting the fixture head to a support surface.