Historical clue formulations

• Unvarying — 2020-08-21
• Unvarying in tone — 2016-07-03
• Repetitive, as in criticism — 2015-08-02
• Lacking variety — 2014-02-23
• Lacking in variety — 2013-12-17
• Unvarying — 2013-04-07
• See 33-Across — 2010-12-10
• Without variety — 2002-11-15
• Lacking in variety — 2002-11-07
• Musically monotonous — 2002-08-25
• Not varied at all — 2000-11-18
• Unvarying — 1998-07-11
• Rodgers and Hart's "Johnny ___" — 1997-02-15
• Rodgers and Hart's "Johnny___" — 1996-03-02