  More needs to be said, but Kant supplies at least the beginnings of one plausible-looking account of how it might be possible for us to be aware of change and succession in the way we seem to be. This ‘Retentional’ approach – recalling the terminology of §1.1 – soon found other advocates, and is comparatively commonplace by the end of the nineteenth century. Brentano recognized that reaching a clear understanding how it is possible for us to directly experience succession and persistence is central issue for phenomenology (or ‘descriptive psychology’ as he preferred to call it). He also recognized that a mere succession of experiences does not, in and of itself, add up to an experience of succession. Brentano’s solution is reminiscent of Kant’s: when listening (say) to an extended tone or melody, he argued, at each moment you are aware of a momentary sound-phase, in the form of a momentary auditory sensation, but you are also (and simultaneously) aware of a series of representations (or retentions) of the immediately preceding phases. The latter Brentano referred to as proteraesthesis. In lectures in Würzburg in 1873 Brentano illustrated what he had in mind with a diagram, similar to the one depicted in Figure 2, which depicts the experiencing of a melody.