The collective dynamics of mysoin motors in skeletal muscle, also known as actomyosin crossbridges, underlie the material and functional properties of muscles. Crossbridges are molecular motors that cycle between an attached state during which it mechanically couples two polymeric filaments and transmit forces, and a detached state. In its attached state, crossbridges behave as molecular springs that store elastic stresses and dissipate the stresses upon detachment. Therefore, its mean cycling time is the stress relaxation timescale for an ensemble of crossbridges. Against externally applied perturbations acting faster than this timescale, the ensemble resists like an elastic body with stiffness that scales in proportion to number of attached crossbridges. Against slower perturbations, the ensemble freely yields like a viscous fluid. We show using the attachment/detachment kinetics of crossbridges that the perturbation response of an ensemble of crossbridges is linearly viscoelastic, but with a spread of timescales. The response is the sum of many Maxwell bodies (a spring and damper in series). Unlike previously thought, we show that there is no single timescale over which stresses relax, rather a spectrum of timescales arises from the distribution of strains across crossbridges.