Middelie, The Netherlands. The Dutch Hammond organ player Rob Mostert develops, in cooperation with Stingray DJAZZ, the program Mostert Meets. In this series, the Hammond B3 organ takes center stage. Rob Mostert invites the worldâs finest jazz musicians for a musical collaboration, in which the Hammond Organ plays a major role. The Hammond B3 is an electric organ, which generates sound by creating an electric current from rotating a metal tone wheel near an electromagnetic pickup. Initially, the Hammond B3 was at home in churches, until it entered the jazz scene in the mid-20th century. In this episode, Mostert teams up with the Dallas-born vocalist Dede Priest. Sheâs renowned for her raw sound. She knows how to sing blues and gospel like no other!