You may want to have some background music playing before the start of your presentation. In certain situations this may be helpful to create a good atmosphere for your audience. Music is a
powerful instrument to trigger certain emotions or set the right tone. When you stop the music it is also a clear automatic sign for your audience that you will start your presentation and that
they need to pay attention to you. There are thing to consider in terms of what music to use (for example royalties). The bonus material that is being made available with the book Public Speaking Excellence includes great music that you can use before the start of your
presentation in front of an audience.