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Siblings of the two you chose, each with one small piece of charm the others do not have. Fifteen seconds is enough to pick a direction; whatever you like gets built out properly afterwards. Same passage of the story under all of them, same loudness, so only the music changes.
The honest headline: none of these beats the storybook by measurement. Number five is its equal, the rest are behind. So this is not a question of which is better made. It is only a question of whether any of them is more delightful to you, and that is the one thing nothing here can measure.
Ignore any number you are tempted to read into fifteen seconds. We scored the storybook’s own fifteen-second windows and they range from poor to excellent depending only on which fifteen seconds you take. Trust your ear here, not the arithmetic.
These are unpolished on purpose. Three of the five would need shaping before they could be used, and one would need a lot. Polishing them first would have meant judging heavy surgery on one against none on another, so you are hearing them as they came.
The same fifteen seconds with nothing under it. Play it first, and again in the middle, or everything starts to sound like an improvement.
Celesta and glockenspiel with a cello far below. Each phrase ends with one note leaning warmly onto the next and coming to rest — a small sigh that resolves.
The catch. Measures best of the five, and the steadiest. The risk is the opposite of the usual one: it may be too subtle to notice at all.
The storybook you chose, unchanged in character, but every phrase comes back a second later, quieter and lower — like an echo across a clearing.
The catch. The closest sibling to the bed you picked. Slightly behind it on the numbers, and where it collides with speech it does so up in the consonants rather than down in the vowels, which is the gentler way to be wrong.
A harp turning over the same handful of notes, one ringing bell above. The charm here is texture rather than a figure — nothing happens, it just shimmers.
The catch. The most level movement of the five, which is my least confident call: it might read as alive, or as restless. It also sits right where the children's voices are, so it would need shaping.
A high glockenspiel and a low clarinet taking turns and never playing together — two characters having a conversation rather than one instrument playing.
The catch. Every event is a change of voice, which is the most attention-catching idea here. It is in the set partly to find where the line is. It also lands squarely on the children's range.
The walk's pizzicato steps, tune moved onto a glockenspiel, and every few seconds it skips a beat and the next two notes hurry to catch up.
The catch. By far the busiest. Rhythm is the thing a body tracks, and this has more events per minute than a take that was already rejected for being too active.
If none of them is more delightful than what you have, keeping the storybook is the right answer and costs nothing. Two of these are a single regeneration away from being fixed if you like the idea but not the execution.