animation video

I am looking for a freelancer to help me with my project. The skills required are Animation, Video Editing, Video Production and Video Services. I am happy to pay a fixed priced. The requirements are the following. The song is a song ment fot kids. You will be provided a music file (mp3) with 1:23 (one minute and twenty three seconds) that is a song. This music file have noise. It needs to be possible to replace later on the song with noise for a song without noise. Instructions on how to replace the song need to be provided from your side. Blender is the prefered tool. If final delivery is a Blender project, it will have + points. There will be also a small indication on the song theme and what is the song is talking about, so the animation can match the content of the song. The original language of the song is Portuguese. All the graphical content need to be good to use on a commercial project. There will be 2 steps for this project: First 30 seconds that will be for proof of concept. This will grant a pay of 1/4 of the value agreeded. The remaining of the song that will be the remaining pay.