The Helsinki Complaints Choir (video link) is, in the view of those who do not believe otherwise, the finest of the world’s several complaints choirs.
Helsinki is a good place to study complaints and choirs, and the relation between them. Laura Lehto and three colleagues at Helsinki University Central Hospital recently published the possibly pertinent study:
“Occupational voice complaints and objective acoustic measurements-do they correlate?” in the journal Logopedics Phoniatrics and Vocology (vol. 31, no. 4, 2006)
(Thanks to investigator Leigh Buchanan and numerous others for bringing the choir to our attention.)