Born in the Ruhr District (Ruhrgebiet) in Germany, Leonie relocated to Los Angeles as a teenager. She studied classical guitar at Los Angeles City College, and received a Bachelor's Degree in Composition along with a Minor in Dance Performance at California State University Northridge in 2010.
She completed a one-year course at the Institute of Sonology afterwards and is currently finishing the fourth and last of the Contemporary Music Through Non-Western Techniques program at the conservatory of Amsterdam with Rafael Reina as her principle teacher.
Leonie spends a lot of time out and about with her field recording equipment, collecting material to be used for radio broadcast pieces, installations, and background soundtracks for her chamber music pieces. Her soundcollages of environmental sounds also play an important role in the pieces which she co-creates for the Motabar-Roessler Duo.