Historical clue formulations

• Synagogue singer — 2020-01-28
• Singer in Jewish services — 2018-11-03
• Hymn leader — 2014-05-31
• Rabbi's co-worker — 2011-05-03
• One whose lead is followed in the service — 2008-10-24
• Synagogue singer — 2005-02-08
• Psalms singer — 1997-09-05
• "No, No, Nora" singer — 1995-12-29