found: Medieval Paris [SR] 1973:container (Christopher Ball, director of Praetorius Consort)
found: Int'l ww in music, 9th ed.(Ball, Christopher, b. 7-7-1936, Leeds, UK; conductor)
found: Christopher Ball, composer, conductor, recorder soloist, photographer WWW site, Oct. 31, 2008(Christopher Ball; b. 1936; recorder player and teacher, clarinettist, orchestral conductor, publisher, arranger, composer, and photographer)
found: Wikipedia, January 25, 2019(Christopher Ball (born 7 July 1936) is a British composer, conductor and clarinettist; born in Leeds, England)
