Both of my children loved this toy! We received this toy as a gift for my first born. It attaches to a crib and plays three different songs. There are different settings with which a child can see fish and other ocean creatures swim around and/or have bubbles come up in the water. The volume can be controlled. There are also two different knobs that a child can make something spin around or open and close. My first son loved the early version of this toy. When he woke up in the middle of the night, he would turn on the music by himself (by kicking it with his foot) and have it sooth him back...