1. Open the Messages app on your iPhone.
2. Tap the conversation you want to send the song to.
3. Tap the App Store icon in the bottom left corner of the screen.
4. Tap the Music icon.
5. Tap the song you want to send.
6. Tap the Send button.
To send a song from an iPhone using AirDrop:
1. Make sure that both your iPhone and the recipient's iPhone are turned on and have AirDrop enabled. (To enable AirDrop, open the Control Center on your iPhone and tap the AirDrop button.)
2. Open the Music app on your iPhone.
3. Tap the song you want to send.
4. Tap the Share button.
5. Tap the AirDrop button.
6. Tap the name of the recipient's iPhone.
7. The song will be sent to the recipient's iPhone.
To send a song from an iPhone using email:
1. Open the Mail app on your iPhone.
2. Tap the Compose button.
3. Add the recipient's email address in the To field.
4. Tap the Subject field and type a subject for the email.
5. Tap the body of the email and type a message.
6. Tap the attachment icon in the bottom left corner of the screen.
7. Tap the Music icon.
8. Tap the song you want to send.
9. Tap the Send button.