Just for interest - Joel Wapnick, a music education scholar at McGill University (and also, I discover from Googling him just now, an international Scrabble champ) has shown that people rate the quality of musical performances from more attractive players more highly than those from less attractive players. No surprise there. However, the effect persists even in an auditory-only condition, i.e. when the raters cannot see the performers. Wapnick has replicated the finding in different situations over a series of papers.