 Is there another explanatory route? Suppose that instead of a causal relation, we understand the relationship between sounds and sources mereologically, or as one of part to whole (see O’Callaghan 2011a). Parthood frequently does ground perceptual awareness. For instance, seeing distinct parts of a surface interrupted by an occluder leads to perceptual experience as of a single surface (imagine seeing a dog behind a picket fence). Seeing the facing surfaces of a cube affords awareness as of a cube, and we can attentively track that same cube as it rotates and reveals different surfaces. Suppose, then, that a sound is an event-like individual (recall, property accounts escape the worry). This event is part of a more encompassing event, such as a collision or the playing of a trumpet, that occurs in the environment and that includes the sound. So, the typical horse race includes the sounds, and you might auditorily perceive the racing in hearing some of its proper parts: the sounds. More specifically, you may hear the galloping thanks to hearing the sounds it includes. You may fail to hear certain parts of the racing event, such as the jockey’s glance back after crossing the wire, but you also fail to see parts of the race, such as the misstep of the horse in second place. If the sounds are akin to the audible “profile” of the event, analogous to the visible surfaces of objects and visible parts of events, you might then enjoy auditory awareness as of the galloping of the horses in virtue of your awareness as of the sounds of the hooves. The sound is not identical with the galloping, and it is not just a property or a causal byproduct of the galloping. It is a part of a particular event of galloping. The metaphysical relation of part to whole, in contrast to that between effect and cause, might ground the sort of epistemically unmediated awareness of interest (cf. Nakayama et al. 1995, Bermúdez 2000, Noë 2004). Auditory perceptual awareness as of the whole may occur thanks to experiencing the part.