I was thinking a pre created loop (audio /vocal/spoken word/with or without music being your intro should be possible (apple loop utility is there) but I think You could do it all in Garageband
This thread has been closed by the system or the community team.
You may vote for any posts you find helpful, or search the Community for additional answers.
CAN YOU MAKE DJ INTROS ON GARAGEBAND
Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.