The portfolio presented comprises of five binaural acousmatic works composed primarily for headphone reproduction but also for multi-channel loudspeaker concert diffusion. The commentary traverses the programmatic and aesthetic considerations involved in the construction of the portfolio and the influence of the in-ear binaural method of recording and reproduction thereof. The spectral watermark (the effect of the recordist on the resulting recording), negative space (the space left by the recordist, subsequently occupied by the listener), spatial strategy and the contextually rich results of the method are discussed, along with their creative applications within the portfolio.