"Sunset Heights (Alpha Mix) - Sonic Forces" is a high quality rip of the alpha mix of "Sunset Heights" from Sonic Forces.
At 0:11, it becomes an unsynced mashup with "Astronaut in the Ocean". Additionally, the advertised track's leading melody is also out of sync. From 1:24 to 1:44, multiple instances of "Astronaut in the Ocean"'s vocals and the advertised track's melody are layered on top of each other. At 1:45, the melody briefly changes to "Reach for the Stars" from Sonic Colors (Wii).
At 2:04, a pitched up "Yankin" can be heard just before the rip ends.