Choose your music carefully. Determine what kinds of music you want to play. Ask yourself whether you want to choose classical, popular or modern music for your magic show.
Decide what kind of mood you're wanting to set with music in your magic show. Determine if you are looking to set a peppy mood in a major key or whether you're wanting to create a mysterious, mournful or atmospheric mood in a minor key. Determine what kinds of instruments you want to hear in your music to help create the right mood for your magic show.
Evoke certain images and themes through certain songs. "Chariots of Fire" elicit thoughts of slow-motion action, "Mission: Impossible" evokes thoughts of suspense and "The Exorcist" elicits thoughts of supernatural mystery. Each type of song you can choose can mean different things to your audience.
Decide whether you want your audience to start humming or singing along to your music. If this happens, then your audience has been drawn away from your magic show and into the music. Ask yourself whether you want this to happen. This can be a good thing to sway attention during a particular magic trick but can be a bad thing if you are trying to introduce your show.
Fit your magic routine to the music. You may choose to build your magic routine around the song. If you do this, just make sure that you don't add repetitive or nonessential actions just to make the trick long enough. You should try to match your onstage actions with the tempo and length of the music.
Edit the music to fit your needs. If you need music to last a specific length of time, edit the music ahead of time. This kind of musical editing requires careful planning and professional sound equipment to make it sound good.