Historical clue formulations

• Comic pianist known as "The Clown Prince of Denmark" — 2024-04-28
• Pianist/comic Victor of old TV — 2018-07-11
• 20th-century comedian who was known as "The Clown Prince of Denmark" — 2017-04-07
• Performer dubbed "The Great Dane" — 2010-11-24
• The Great Dane of entertainment — 2009-01-09
• Victor of piano antics — 1997-10-23
• Victor in music — 1995-06-04