Three concerts from 2016 & 2017 of different string duos anchored by Leandre's double bass, starting at rue Victor Masse 75009 in Paris in a double bass duo with Bernard Santacruz; then a bass and cello duo at Le Triton Les Lilas, France with Gaspar Claus; and completing the set, a performances at DZIK, in Warszaw, Poland with violinist and violist Theo Ceccaldi.