Is it back? I guess it's back.
Two new games since this was last discussed. Practically all of the Chronicles music was borrowed liberally from previous games, it would take too long to discuss those. As for Sonic Unleashed... the whole Savannah Citadel/S1GG Ending thing has been discussed to death. I noted that the World Map theme (which Sonic was whistling in the werewolf teaser) bears some similarities to the original Angel Island theme.
Oh, and slightly old, but now that I've heard a fair amount of SRA's soundtrack, more than the style was copied. Sky Babylon/Jeh Jeh Rocket; Plant Kingdom/Right Here, Ride On; Big Swell/Wrapped in Black.