The right setting makes all the difference. For maximum emotional impact, keep these three rules in mind:

• Kill the background noise: You want them to hear every single custom lyric clearly. Avoid loud restaurants or crowded spaces.
• Use real speakers: Do not play this out of a tinny phone speaker. Connect to your car stereo, a Bluetooth speaker, or your home sound system.
• Check the connection: Ensure you have strong Wi-Fi or cell service so the song doesn't buffer right before the chorus. (Pro tip: Download the file to your phone first).

For this to work, it must be a total ambush. Do not tell them you bought them a custom song. You want them to realize the song is about them as the lyrics unfold.

• The Casual Approach: "Hey, I heard this new artist the other day and I think you'll really like their sound. Listen to this..."
• The Car Trick: If you are already driving, simply queue it up to play immediately after another song finishes. When it starts, say, "Oh, turn this up, I love this track."
• The Long-Distance Play: If you can't be there in person, text them the audio file and say, "This song immediately made me think of you. You have to listen to the lyrics."

Nothing ruins a beautiful moment faster than Bluetooth failing to connect. Run a quick solo test before the big moment.

• Connect to the speaker you plan to use.
• Check the volume to make sure it isn't deafening or too quiet.
• Practice what your "casual excuse" is going to be so you don't stutter.

This is optional, but highly recommended. Capturing the exact moment they realize the song is about them is something you will both want to keep forever.

• Hide the lens: If you point a camera in their face, their guard will go up. Prop your phone on the dashboard of your car, or lean it against a book on the coffee table.
• Get in the frame: The best videos show both the giver and the receiver. Position the hidden camera so it captures both of your reactions.
• Keep it steady: Do not hold the phone in your hand. A stable, wide shot is always better.