 He was a guest artist on the Norwegian jazz artist Bugge Wesseltoft's album "FiLM iNG".Youssef has performed with Ustad Zakir Hussain, Uri Caine, Tigran Hamasyan, Jon Hassell, Markus Stockhausen, Nguyên Lê, Omar Sosa and Hüsnü Şenlendirici.In 2001, he recorded "Electric Sufi" with the ex-Sugar Hill Gang and Tackhead rhythm section of Will Calhoun and Doug Wimbish.