I downloaded the song by Willie listened to it a half dozoen times......played it myself with the lyrics...Willie sings it in the key of A..and yes it is similar in ,melody to Mamas - Don't Let Your Babies......But I have to be honest......To me it is not a well written song and Willie does a very predictably commercial job of it.....Too bad...My opinion of Willie isn't too good these days...after his collaboration with Toby Keith and then this......It is a very important subject, and it needs to be addressed in song....but for me, this isn't it....Frank of Toledo