Stephen Cahyadi began his piano studies at age7, under the tutelage of Mrs. Laura Susanti Himawan, Mrs. Paula Tunggono, Mr. Soetarno Soetikno, Mrs. Latifah Kodijat, and Mr. Wei Tsin Fu. In 1985, he completed Piano Performance and Music Pedagogy diploma from Yayasan Pendidikan Musik (YPM) Manggarai.
He was an accompanist to Eliata Choir (1985-1996) and Jakarta Oratorio Society (1986-2010) and is an active piano collaborator in recitals and in church services.
He has amassed a good deal of piano teaching experience for the last 25 years. He is also a certified Piano Educator in Suzuki method since he was introduced to it at the end of 2009 and has completed his Suzuki Piano training under Mrs.Carmencitta Arambulo. He now serves as piano lecturer in Musicorum and also Piano Head in Suzuki Method in Indonesia.