Tip: When determining a time limit, remember that players won't be as familiar with the level as you are. If you normally complete the level with the timer around 100, others might run out of time on their first try.
The chill theme from Knuckles' Chaotix that presumably plays during something that plays at night, but is probably very versatile. Like a lot of Chaotix music, this one makes me think of a beach at sunset, but it can most likely find use in a lot of other places.
Special thanks to Nameless for helping me experiment with the lead instrument.