 Different options concerning the relationship between sound and sound sources and how we perceive them have been proposed. According to Matthen (2010) both sounds (and sound composites like melodies, harmonies or sequences of phonemes) and sound sources can be heard directly. Leddington supports the Heideggerian view of hearing, for which we “hear sound sources directly, in hearing the sounds they make—not, à la Berkeley, merely in virtue of hearing those sounds” (2014: 340). Nudds, instead, suggests that when listening to sounds we hear them as apparently being produced by the same source (2010a, 2010b). He suggests that we can also perceive the production of sound bi-modally: by simultaneously listening to and seeing the cause of sound (2001).