CD Cover Design for Nursery Rhymes

We have created a fantastic recording of 50 Nursery Rhymes which we are going to be making available on various places including iTunes, Spotify, Amazon, Apple Music and more. We want to use a classy and fun design to represent it on these stores. We are lookiing for someone who thinks they can design something for us to reflect it.
Have enclosed some examples we like (think the 3D element rather than 2d flay illustration works nicely).
The title of the album will be: 'Wow 50 Best Nursery Rhymes Ever'
Whilst i realise there are a lot of words the key elements are '50', 'Nursery Rhymes','Best'.