Historical clue formulations

• They need a push to get started — 2025-05-06
• Cycles — 2021-02-10
• Bikes — 2019-03-22
• Piano trio? — 2018-07-14
• Bicycling couple? — 2017-09-30
• Piano parts — 2017-02-03
• They often get depressed — 2012-03-09
• Mechanisms not meant to be handled — 2011-07-16
• Organ appendages — 2011-05-14
• Goes by foot, in a way — 2010-02-20
• Piano trio — 2006-01-27
• Propels, in a way — 2005-10-07
• Car controls — 2002-08-16
• 45-Across features — 1999-03-30