The Teen Tones
I didn't think there'd be anything on the female choir group The Teen Tones to be found on the internet, but they're mentioned in the Canadian Encyclopedia's article about Medicine Hat, Alberta. The Teen Tones were formed in 1964 by Mrs. Adele Armstrong, a teacher and performer who also founded the Saamis Singers in 1976. In 1978 the two choirs were combined to form the Saamis-Teens girls' choir. She also formed The Adele Armstrong Singers, a mixed adult choir, as well as the Kodály Songsters children's choir, and her various groups have performed in festivals and competitions throughout Canada and Great Britain. All three of these choirs are still active, and The Adele Armstrong Singers released a Christmas album in 1993.
The back cover mentions that the girls were accompanied at this concert by Mrs. Armstrong, as well as instrumentalists Melodie and Merelie Armstrong and percussionist Fred Link. "Those Were The Days" was originally a Russian folksong written by Boris Fomin with lyrics by poet Konstantin Podrevskii, although most people know it from Mary Hopkin's 1968 version. And "Where Is Love?" is from the musical Oliver! As performed by The Teen Tones, both songs have a spectral, delicate beauty.
Note: These songs have been archived at It Came From Canada.