Yosef Shmuel Gestetner
Yosef Shmuel Gestetner was born and raised in Toronto, Ontario, the third of four children in a warm home full of song.
After learning in the States for a few years, he relocated to Monsey, NY where he now resides.
When not on the road with Kollab, YSG is a CMO at CBS, a Nursing Home Back Office Company.
A talented athlete, YSG plays hockey (and other various sports) a few nights a week and is a straight legend on ice.
Yosef lives with his wife and daughter in Monsey, New York.
David Farhi
David Farhi grew up in Deal, NJ, the 8th of 9 siblings and is the founder of Kollab.
When not singing, David spends his time working with Israel Medical Fund, a non profit focused on medical initiatives in Israel.
In his spare time, he posts incessantly to Instagram and helps consult with organizations and companies.
Yoni Gelfand
Yoni Gelfand grew up in Monsey, NY to a loving family that cultivated his passion for music from an early age.
Yoni recently graduated from Baruch College and currently works as a salesman-in-training for an energy company in NY.
Every winter and summer, Yoni travels to Israel to lead educational programming for Taglit Birthright and other organizations.
When Yoni isn’t singing with Kollab he enjoys playing pickup basketball and ultimate frisbee.
Shimmy Back
Shimmy Back grew up in Lakewood, New Jersey to a super lively family of 11.
Shimmy generally sings melody and lower harmonies for Kollab.
Holding a Masters degree in accounting, Shimmy works as the state director of an ABA company. Aside from singing, he enjoys art, photography, football, baseball, and a L’chaim or 3.
Shimmy lives with his wife and son in Lakewood, New Jersey.