Charles-Marie Widor
In 1963, Roth became Rolande Falcinelli's substitute at the great organ at Basilique du Sacré-Coeur in Paris. He succeeded his former teacher as titular organist in 1973, and held this position until 1985, when he was appointed titular organist at Saint-Sulpice in Paris, where his predecessors were Charles-Marie Widor, Marcel Dupré, and Jean-Jacques Grunenwald.