Sonic the Hedgehog CD/Beta elements

Throughout Sonic the Hedgehog CD's development, some changes were made, most of which are documented here.

Power Sneakers
The Japanese/European Power Sneakers Music Changed Drastically In Development. The Beta Power Sneakers Music Is A High Energy Remix Of "You Can Do Anything"

Bosses
There May Be Other Beta Bosses, But We Only Know Of One Changed Boss. In Palmtree Panic, The Boss Was Meant To Have Claws Instead Of Bumpers.

Title Screen Music
The Title Screen Music Also Changed Dramatically In Development. You Can Hear It Here.

Conclusion
I May Not Have Featured Every Last Detail, But I At Least Tried To! Feel Free To Edit!