Historical clue formulations

• Iconic 28-Across player — 2023-03-31
• Character seen on a keyboard — 2022-05-15
• "Peanuts" boy — 2018-07-13
• "Peanuts" character — 2001-12-29
• Big Beethoven devotee — 2000-03-15
• Lucy's love, in the comics — 1995-05-28
• Comic strip pianist — 1994-09-30