Egert Leinsaar began his violin studies at Pärnu Music School with Leo Viller and later Tatyana Günter in 1995. In 2003, he became a student of Tiiu Peäske at Tallinn Music High School and he continued his violin studies at Estonian Academy of Music and Theatre.He has participated in several master courses both in Estonia and abroad, also he has won prizes at National String Players Competition and ESTA National Competition-Festival for Violinists and Cellists.He has played in many orchestras, such as European Union Youth Symphony Orchestra, Estonian Festival Orchestra, Grafenegg Academy Orchestra, Nordic Symphony Orchestra, Lapland Chamber Orchestra (Finland), and given concerts all around the world. From 2009-2017 he was a member of the Tallinn Chamber Orchestra, since 2017 he is working in Estonian National Symphony Orchestra. He is also member of the Association of Estonian Professional Musicians.