Erin 
Unlike alright and all right, altogether and all together are both legitimate usages with entirely different meanings. Their differences are best illustrated in this quote from the movie Airplane!
Striker: “Its an entirely different kind of flying, altogether.”
All Together: “Its a entirely different kind of flying.”
In Striker’s statement, altogether means completely or utterly (and truthfully, it’s a bit redundant in the sentence–entirely fulfills the same purpose).
In 1965, The Who told us “The Kids are Alright,” spawning generations of the use of alright in music.
When I was a reporter for a small daily newspaper back in the late 90s, I had an editor whose biggest pet peeve was the misuse of the word “everyday.” His peeve has followed me into my professional life, and I cringe a little every time I see it being used improperly.
Anyone who’s ever written a short story or taken a freshman composition course has heard the words “show, don’t tell.”