Premise: François-Xavier Roth (born 6 November 1971 in Paris) is a French conductor. His father is the organist Daniel Roth. His brother Vincent Roth is a violist. Before turning to conducting, François was a flautist. Roth graduated from the Conservatoire National Supérieur de Musique, where his teachers included Alain Marion and János Fürst.
Hypothesis: The different Roth musicians play different instruments.