create a 2d or 3d animation video for baby nursery rhymes

I'm looking to create 3 different videos for my youtube channel 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 3 videos to create out of the 6 shown below. You should also provide some kind of music for the video that would go with it. The videos should be no longer than 3 mins in length for each of the 3 videos. Please refer to the examples below and the quality should be in 3D and with vibrant colours. Video Song Example 1 [login to view URL] The song would be - Wheels On The Bus Video Song Example 2 Number Song - [login to view URL] Video Song Example 3 Three Little Kittens - [login to view URL] Video Song Example 4 If You're Happy And You Know It - [login to view URL] You can view several of these online and also view the nursery rhyme for this as well. But the concept should be different not the same 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 ideas and would like to continuously hire a freelancer to produce around 50 more videos for my video channel. I need logo creator for my channel also and text. The text is "Little Sowmi" but this will be confirmed towards the end.