Avishai was born in Kabri, a kibbutz in northern Israel. He has Spanish, Greek, and Polish ancestry. He grew up in a musical family at Motza and Beit Zayit near Jerusalem until the age of six, when his family moved to nearby Shoeva. He began playing the piano at 9 years old but changed to the bass guitar at the age of 14, inspired by bassist Jaco Pastorius. When his family moved back to Israel he joined the Music and Arts Academy in Jerusalem with a focus on acoustic bass.

(Wikipedia)