So I have to ask.. what did you do while the announcements played? Stood there? Disappeared and worked cues backstage?
How is this any different than lip syncing?
I'm not attacking you, as you've been very professional in your response.. but your answers spark more questions!

Hank. I'm wondering about the mechanics of creating the track. If it's a trade secret that's cool with me.I'm wondering did you record each name separately then add in the background and splice them all together or do a run of the names in one track and add the music later?
Just wondering I'd go the long way about it -- record each intro as separate file, the do the mix, and finally add the names to go with the mix.