Daniel Williams documents his process for producing a radio trailer using GarageBand. He begins by importing audio files from a USB drive into GarageBand. He then records voice clips from a colleague to use for the opening and closing of the trailer. Additional documentary audio clips are also imported. Clips are trimmed and arranged on separate tracks, with background music added to one track. Final adjustments are made before exporting the completed trailer to iTunes and onto a USB drive for delivery to the radio station.