"Salisbury Cathedral Choir, established since the 13th century, nowadays has equal numbers of girls and boys.
Possibly they all play tennis too." (Diane)...add "table" for the females and WAV, for one, would be quite happy with all that.

"Speaking of choral music, have a listen to 'Spem in alium' by Thomas Tallis, and look when it was written. If that doesn't prove you wrong about polyphony, nothing will." (Smokey)...but that is not an E. trad. - it is "BY THOMAS TALLIS".

And as for WORLD MUSIC, Volgadon...

"World-music stalls and stages should be places where folkies of different nationality present different unfused music to each other" (here).