The lead composer of the game, Tomoya Ohtani, uses musical samples in some of his tracks for the game, similar to how Hideki Naganuma and Ohtani himself used samples in Sonic Rush and Sonic Rush Adventure, respectively. One amusing coincidence is that the intro of Windmill Isle is based directly from a remix of a track from the arcade-only game Ollie King, which Naganuma composed the entirety of.
Contributed by SonicManEXE