“…Bourne & Kenny, 2016;LeBorgne et al, 2010), or compare expert evaluations of classical singing with acoustic measurements (e.g., Ekholm et al, 1998;Sonninen et al, 2005). The sheer complexity of the task of singing description and evaluation is also due to the ambiguity of terms used to describe singing (Hausknecht, et al, 2021;Mitchell & MacDonald, 2012). In a rare example of evaluation of CCM singing, one study investigated the evaluation of pronunciation using an online corpus of solo karaoke performances of popular songs, but this research was more concerned with developing a strategy for automatic evaluation of sung pronunciation than with overall evaluations of singing quality (Gupta et al, 2018).…”