Historical clue formulations

• Band that helped popularize "pay-what-you-want" pricing with their album "In Rainbows" — 2025-12-03
• Rock group with the 1992 hit "Creep" — 2025-05-18
• Band that used a pay-what-you-want model to sell their 2007 album — 2016-12-08
• 2001 Grammy-winning band for the album "Kid A" — 2002-10-25