Historical clue formulations

• ___ rock (genre for Pink Floyd and Dream Theater, familiarly) — 2025-07-27
• Lead-in to rock — 2024-01-06
• ___ rock (music genre) — 2020-01-17
• ___ rock (music genre) — 2019-08-24
• ___ rock — 2013-08-04
• ___ rock (music genre) — 2012-11-16
• Bull Moose party: Abbr. — 2007-10-02
• Bull Moose's party: Abbr. — 2005-03-27
• Govt. initiative — 2002-08-13