Historical clue formulations

• One-named singer from Iceland — 2024-07-08
• One-named singer born in Reykjavik — 2024-03-31
• One-named singer who once led the Sugarcubes — 2019-12-17
• One-named singer with the 1993 platinum album "Debut" — 2019-07-19
• One-named singer with an "ö" in her name — 2019-05-16
• One-named singer from Iceland — 2016-06-01
• Single-named musical artist — 2016-05-27
• Oscar-nominated Icelandic singer — 2007-06-28