female voice to sing in Japanese -- 2

Hello, I need a female voice to sing children songs in Japanese. This project would be for one song but I'll need more songs recorded in the future. We will provide instrumentals and the lyrics. You will have to send us a high-quality recording of your voice singing the song (with some backing vocals), in wav format. Please keep in mind the voice will be placed over the video animation and background music, so the timing should be synchronized. You will be requested to sign an agreement that we own the rights for the final song (needed so we can use it on a YouTube video). please share a sample of you singing. ONLY JAPANESE NATIVE SPEAKERS ARE ACCEPTED