But you must choose a piece of music related to the content of your speech.
For example, if your speech is impassioned, then the music should not be too soft.
Your speech is enthusiastic, so the music should not be fast-paced.
In short, let the music set off your speech, and don't let the music steal the limelight.
You can't make people think that your music and speech are two different things.
It should be integrated and complementary.
If you choose bad music, it will backfire.