Usage of Gonna....

About the informal usage of Gonna (going to), wanna (want to), dunno (I don't know), Ain't (I am not) in particular they are frequently used informally by American, Australian, Canadian English Standard. It is very common to find out She don't, He don't and I'd like to say that it is not grammar correct...no way...but accept in musical's groups, moreover lyrics songs, the nex post check out a lyric song by Scorpions, "Drive". So far, have a great day...