Céline Dion, Whitney Houston, Taylor Swift: Going Down A Rabbit Hole -- November 19, 2022

Link here.

Six of the best, link here: 

• the songs (excludes "Motown"):
• Beyoncé -- "Love on Top"; four key changes
• Adele -- "All I Ask"; a song driven by the key change
• Taylor Swift -- "Love Story"; marked the start of her crossover from country to pop
• Daft Punk -- "Within"
• Lady Gaga -- "Perfect Illusion"; one of the boldest key changes ever sung
  
• Ariana Grande -- "Greedy"; a key change that needs to be heard to be believed
  
• the fact that Coolaccidents failed to mention Céline Dion and/or Eric Carmen (The Raspberries; "All By Myself") tells me everything I need to know about Coolaccidents.
  

Songs with prominent key changes, link here:

Modulation: wiki. Sentiment is accurate: "Motown" is misspelled and source is incorrect. Source was corrected later at the link. 

Correct source: Forte, Allen (1979). Tonal Harmony in Concept & Practice, p. 265. ISBN 0-03-020756-8.

Motown music, modulation was key, link here.

Taylor Swift, link here.

The most elegant key change in all of pop music, link here:

And of course, then we have Del Shannon's "Runaway," link here: