Born in 1968 in Tel-Aviv, Israel, Hagai began playing guitar at the age of 15. He learned to play his first chords from books and friends. After being exposed to the work of important Israeli composers such as Matti Caspi, Yoni Rechter and Shlomo Gronich, he gradually started to expand and develop his own chord vocabulary and technique. After completing 3 years of military service in the Navy, Hagai enrolled the "Rimon School of Jazz and contemporary music" graduating in 1994. Hagai Is also a graduate of "Rubin" Academy of Music,Jerusalem.