Take It Away Meaning

(idiomatic) To begin, especially used to launch a performance of some sort (usually imperative and/or exclamatory).

Example:   I'd like to introduce Mumbo the Magnificent and his dancing parrot, Tiddles. Take it away, Mumbo!
1998, Rushmore, 00:33:50
  MRS WHITNEY: We have a new student with us today. His name's Max Fischer and he's actually asked to say a few words to the class. Max? You want to take it away?