After studying clarinet in Hannover and saxophone and bass clarinet at the Amsterdam Conservatory with Tim Armacost and Harrie Sparnaay, Lothar became a prominent member of the improvised music scene in Holland, recording a performing with numerous groups and labels. In 2000 he formed Azilut with Julie Sassoon and relocated to England. He has since recorded for Babel records in London and continues to perform all over Europe. Lothar has worked with a great variety of groups in Jazz and modern classical music: Steve Arguelles, Benoit Delbecq, Guillaume Orti, Jim Black, Ingrid Laubrock, Dylan Bates, Jorrit Dijkstra, Julie Sassoon, Sandip Bhattacharya, Mohammad Gomar, Latif Saad, Jaap Blonk, Tjitze Vogel, Johnson Gabriel, Anton Goudsmit, Damien Cluzel, Achim Kraemer, Milo Fell, Tim Giles, Harrie Spaarnay etc.