Three plants, three voices. Each sings a warm chord while its soil is in the range it
needs, and the song sours as it dries out or is overwatered. Best with headphones.
Try this: drag one plant's water down until it falls quiet, then use
solo to hear it alone, and un-solo to see if you can still find it.
Water a plant, or let it wait and dry out (or drag its slider).
Give each its own voice and note. Solo to focus, mute to silence.