Create Videos for Nursery Rhymes

I'm looking to create videos for my local nursery which would be used and shown to children aged 0-4 years of age. The animation should reflect on the song (see link below). Please advise if you also provide vocal service which would be dubbed onto the final video you produce. The vocal dubbing should be of female voice and some of children. You can choose any 4 videos to create from the links as shown below. You should also provide some kind of catchy music for the video that would go with it. The videos should be no longer than 3-5 mins in length for each of these videos. Please refer to the examples below and the quality should be in 3D and with vibrant colors. Also, lyrics shall be visible as song is played Video Song Example 1 Here is an example - [login to view URL] The song would be – Ice cream songs for kids Video Song Example 2 Here is an example - [login to view URL] The song would be – Wheels on the bus Video Song Example 3 Here is an example - [login to view URL] Babies animation of this sort Video Song Example 4 Here is an example - [login to view URL] Babies animation of this sort You can view several of these online and also view the nursery rhyme for this as well. But the concept and video quality should be same or better. Also, no videos can be copied and used as genuine as there would be copyright issues. I'm open to any new or out of the box ideas and would like to continuously hire a freelancer to produce around 200 more videos for my local nursery. Also, inside the video there should be logo or text written on it. The text will be confirmed towards the end. An additional intro video needs to be inserted along with the video. Any questions please let me know.