Paul Tortelier, Testament to Bach, Cello Suite No. 4 in E-flat major, BWV 1010. In July 1990, the renowned cellist Paul Tortelier played the complete Bach Suites (this volume is Suite No. 4) for the 40th anniversary of the first Festival Pablo Casals of Prades, in the beautiful Abbey of Saint-Michel de Cuxa.Tortelier undertook the performances as an homage to his mentor, Casals.