This collection of eighteen papers is a festschrift volume to honour Phil Rose on the occasion of his recent retirement from the Australian National University. Phil’s work in both tonal acoustics and forensic voice comparison has always improved upon the accepted standards through the insistence on rigorous statistical analyses and the introduction of techniques not previously employed in the field. The contributors to the volume take the type of quantitative approach espoused by Phil and apply it to problems in linguistics, presenting statistically-founded solutions. The first six papers cover tones: the environments in which they occur, tonal acoustics of North-central Vietnamese, and of two Japanese varieties, the application of tonal acoustics to Qingtian morphotonemics, tonal identification in Fuzhou, and tone alternations in Ugong. Additionally there are three papers on vowel changes in Chinese, Japanese phonological acquisition, and the phonological systems of Australian languages. The second section groups together six papers on forensic voice comparison (FVC), some using Phil’s general Bayesian approach to FVC. These include a tutorial on linear-scaling effects of phonetic context on vowel formants, the implications for FVC of formant frequencies over the phone in Japanese, an approach to automatic speaker identification using the magnitude and phase spectra of inverse-filtered voice speech, FVC in Chinese using /iau/, and a final paper applying the general approach to the challenges of Language Analysis used to Determine the Origin of people applying for refugee status (LADO). The final section consists of three papers on topics outside these areas but which have nonetheless been influenced by Phil and his work. They include a paper on UG and variation in expression, another on contextualizing the Old Javanese influence on Old Japanese, as well as a lexical-conceptual analysis of ‘eating’ and ‘drinking’ in two varieties of Chinese.