After moving to Los Angeles at age 23, he composed, arranged, and performed alongside Yanni for more than six years, performing in-concert with a number of notable symphony orchestras, touring throughout the U.S. and abroad as Yanni gained worldwide fame. His first show was at the Starplex in Dallas with the Dallas Symphony Orchestra filming a video project. "It was a real trial by fire for me", said Joseph. "First show + 10,000 people + TV cameras equals NERVOUS." He told Jane Fredericksen of the "St. Croix Valley Press" that "It was a big jump, you don't really realize it at the time, but there's no in-between — going from playing nightclubs to arenas." Some of these early tours included the "Reflections of Passion", "Revolution in Sound", "Dare to Dream", "Yanni Live, The Symphony Concerts" 1993 and 1994 concert tours, as well as a performance in Germany that was broadcast throughout Europe and seen by 30 to 40 million viewers. Joseph appears on the 1994 multi-platinum album and video, "Live at the Acropolis." He recounts, "When I reflect back over the years, one of the high points that stand out include performing at the Acropolis with Yanni. Imagine all these different cultures coming together with the challenges of language, equipment, travel, and weather problems. I still picture the police running their dogs through the dressing rooms to sniff out any bomb possibilities right before the show. People still come up to me and comment how that show has affected their lives."