Cupid's Pool is played when Rosella stands at the Grecian pool and watches Cupid fly down and swim around. The song was composed by William Goldstein. The song uses a woodwind melody with harp harmony to give it a fey sound.
King's Quest IV: The Perils of Rosella (DOS)
Five different types of output were designed for the DOS release, each output corresponds to a different group of devices, the Roland, Yamaha, OPL2, 3 Voice, and PC Speaker.
The optimal MT-32 output uses a haunting woodwind melody and a harp harmony. The OPL2 version is similar, but the melody loses it's woodwind timbre and echo which takes away from the haunting sound. The 3 Voice reduces the quality even further to the point where you can't recognize any of the instruments. The PC Speaker version is just the melody without any of the feel of the original.
The file is sound.009 in the resource files, it does not loop.
King's Quest IV: The Perils of Rosella (A2GS)
The Apple IIGS port plays the song on the built-in ES5503 audio chip.
King's Quest IV: The Perils of Rosella (AMI)
The Amiga port plays the song on the built-in 8364 audio chip.
King's Quest IV: The Perils of Rosella (AST)
The Atari ST port included at least two types of output, one for Roland devices and one for the system's built-in YM2149 audio chip. Since the Roland output is the same as the DOS release, it will not be recorded.
The Apple II port does contain music, but this song was excluded to conserve space.