Did a remix Sunset Hill Zone Act 2 from Sonic Advance 3 (which is a remix of Green Hill Zone from Sonic 1... but you most likely already knew that). Still one of my favorite Sonic themes and my favorite of the many different versions of the grassy checkered plains stage theme.
This baby is great for grass stages, athletic / sky stages, sunset stages, night stages, and chase sequences.
There are also 2 customizable pitches for this song that you can adjust in the song's txt file:
1. A# Minor (Original Pitch, turned on default)
2. A Minor (Green Hill Zone Pitch)