Historical clue formulations

• One into jive — 2019-05-26
• Cool one, once — 2013-05-28
• Jazz lover, in old slang — 2012-07-11
• Old swing digger — 2009-05-22
• Jazz lover, in old slang — 2006-08-01
• Swinger, once — 2006-06-09
• Old swinger — 2006-06-02
• Dude, once — 2004-06-20
• Cool dude, 50's-style — 2003-06-11
• One who's beat but good? — 2001-03-29
• Swinger — 1999-07-04
• Jazz lover's tag — 1997-06-20