[3] Following his army service Karduner formed his own rock band and was the backup guitarist for the Israeli singer Uzi Hitman.

[4] After discussions with Hitman and his father, who was from a Hasidic Lubavitcher family, Karduner suspended his career and began studying in a yeshiva run by the Breslover Hasidim for Jews who had turned to Orthodox Judaism ("baalei teshuva").

[5] During one session of secluded prayer ("hitbodedut"), he created the tune for Shir LaMaalot ("Song to the Ascents"—Psalm 121), and one of his teachers urged him to resume his music career, this time in a vein related to Judaism.

[3] His albums are distributed in the US and he has conducted several live concert tours in New York and Chicago,[8][9] including annual appearances in Crown Heights, Brooklyn from 2011 to 2019 with Aryeh Kunstler.

[10] Karduner also joins Moshe Weinberger, rabbi of Congregation Aish Kodesh at the annual Hilula of Kalonymus Kalman Shapira, the rebbe of Piacezna.