Select a song from your music library,Use a ringtone maker app like "Ringtone Maker" to trim the desired portion,Save the trimmed section and set it as your ringtone in the phone's settings.The following is what I personally compiled. I hope it can help you. Also, do you know how to personalize the ringtones on your Apple phone? I am currently familiar with customizing a tifa sexdoll. She will become my unique doll.