Many radio stations in our group run promos with local sponsor inserts. Typically the station voice reads the body of the spot and the local announcer reads the sponsors. There is a right way and a wrong way to do this.

Wrong.
Image voice: This green tip brought to you by.....
Local announcer: sponsor insert....

Right:
Image voice: This green tip brought to you by these environmentally friendly local businesses...
Local announcer: sponsor insert...

Version two is much smoother and professional. Or think of it this way. Don't let one announcer finish another announcers sentences and thoughts.

Know what I mean?