You may be looking for Crisis City Mega Mix (Original)
Crisis City Mega Mix is a mashup of all three versions of Crisis City (Sonic the Hedgehog, and the Moderen and Classical versions from Sonic Generations) It was made by ArcanaAaron.
Trivia[]
- If you were to count the REmastered remix, it would be the 2nd time that ArcanaAaron has re-made this mashup.