Motivated by the increasing significance of Indian Spirituality and its cornerstone, the Pranava Aum, the present article explores the results of a signal based nonlinear analysis of Aum recital. Aum is seen to possess a rich frequency profile, with an array of integral and non-integral harmonic components. The phase portrait of Aum is rich, dense and ornamental, typical of chaotic systems. Polar plots of Aum show a remarkable uniformity in phase distribution. The bispectrum shows ordered pattern of scintillations, ruling out random processes. Quantitative analyses of Aum assert the presence of chaos, while also revealing a high degree of uncertainty, instability and self-similarity in the underlying process. In comparisons with chaos observed in solar cell open circuit output voltage, the similarities between Aum and solar processes become apparent. It is hoped that the results discussed in the present article throw light on Aum, as an audio signal, helping to understand the underlying features and characteristics of this primordial signal. The chaotic nature of Aum speaks volumes about the intricacies and complexities underlying the universal primordial sound, suggesting that it indeed possesses the necessary complexity to be the universal wave function. The similarity with solar cell based signals indicates the ubiquity of this primordial chaos in natural systems, further accentuating the omnipresent nature of Aum.