The Hallelujah Chorus, with closed-captioning:
actually, it's men dressed in drag as nuns... men who are supposed to be monks who've taken a vow of silence but still want to perform Handel's Messiah. They refer to themselves as "the nuns of the Sisters of Perpetual Indulgence"
note: if you like the video above, watch another performance by the Twin Cities Gay Men's Chorus. This longer version includes the introduction by Dr. Stan Hill, Artistic Director. His intro is great and the performance is different. VERY enjoyable!