Historical clue formulations

• Heavy metal band whose name includes an actual heavy metal — 2022-03-22
• Best-selling heavy metal band named for a torture device — 2021-11-26
• British heavy metal band named for a torture device — 2020-05-18
• *Medieval device with spikes — 2014-03-26
• Old torturer — 2008-10-24
• Band with the 1982 platinum album "The Number of the Beast" — 2008-04-05
• L.P.G.A. player? — 1997-06-15
• British heavy metal group — 1997-02-11