Historical clue formulations

• G flat's equivalent — 2026-05-24
• Programming language that's also a musical key — 2026-01-04
• Only black key in a G major scale — 2025-10-20
• Musical neighbor of G — 2020-04-28
• Key that's oxymoronic at school? — 2016-04-30
• Only key Irving Berlin composed in — 2006-06-04
• Tough key for pianists — 1997-10-11