I want to change the singer's voice in the song to another language when I upload it from the computer to a website or software
How can i do it?
you start by putting what you posted in a translator and translate it back in your language, so maybe you understand the confusion your question brings up.
Are you talking voice, text, lyric or what? You cannot just change a singers voice in a song. It is not editable. You would have to delete the voice and replace it with new voice and translate it while you are doing that. This is not possible to my knowledge. Voice recognition inside music is garbage. It does not work good enough. And if you do not have seprate track, you cannot overwrite original voice.
Fetch the lyrics of the song, put them in translator and put subtitles. The way you ask implies you do not have the originalrecording, as you would then simplyrecord a new voice track.