Historical clue formulations

• Onetime popular musician ... or a radio station where he might be heard? — 2009-08-21
• Lawrence of the North Dakota Hall of Fame — 2008-06-18
• "Wunnerful, Wunnerful!" autobiographer — 2002-08-11
• "Champagne music" maestro — 2000-09-12
• TV host, 1955-82 — 1994-02-09