MUSIC - SONG - word digitally

NOTE - ONLY SERIOUS BIDER PLEASE ... PLEASE READ CARE FULLY WHAT WE ARE THINKING AND WHAT WE WANT , YOU NEEDS TO SEND YOUR SOLUTION , THOUGHT , YOUR VIEW ON PM IN DETAILS AS PLAN INCLUDING YOUR LOGIC TO DO THIS WITH LANGUAGE YOU NEEDS TO USE TO MAKE THIS HAPPEN. In any regard I will ask tell you what I need the program to do and you can let me know your thoughts as to how we can make it work. The purpose of the program is to take an existing song and change the singers wording where desired. The singers wording will be replaced in a song, say for example your name in place of the one used in the song. To get the same voice as the original singer, the program will analyze the singers voice through a digital representation of the song and create the new word digitally. The feed of the replacement word (i.e. your name) to the analysis program will be accomplished via text to voice. There are other concerns (thoughts) as follows: how to get a recording where the voice track can be separated from the other instruments the program can be told where the word in the song is in order to handle different songs and placements the output file can can be used in CD/MP3 players, etc. Please let me know what you think the possibility to create such a program is. Maybe there is something already around that matches or closely matches the requirements? HERE IS FEW QUESTION YOU NEEDS TO ANSWER CARE FULLY , IF YOU THINK IT CAN BE DONE. I will like to learn more about the logic and language to be used. As well as the amount of effort required before making a final decision. ALL ANSWER SHOULD BE ON PM . THANKS!