[9] While in seventh grade at Berman, Gaisin met classmate Yaniv Hoffman, a fellow music enthusiast, and began playing with him.

Gaisin moved to Washington Heights in Manhattan, where he met fellow musicians Elisha Mlotek and Zachariah Goldschmiedt through a mutual friend.

Writing for Tablet in 2014, Hillel Broder described Gaisin's vocals as "forceful and far-ranging" and "a mix of Chris Martin and Regina Spektor", as well as sonically evoking instruments like guitar and saxophone.

[13] Gaisin has been a follower of Hasidism since high school[6] and appeared on the Winter 2014 cover of Jewish Action promoting an article about neo-Hasidism.

[14] He has expressed a broad admiration for all strains of Hasidism, stating that "there exists in each one a complete form of the holy Baal Shem Tov.