Just think about a song that no matter how many times you hear it you won't get tired of it at all!! And also think if you want the chorus or a verse cuz I think you can choose... I have Beat It as my ringtone and I used to have PYT, and for both of them the ringtone started @ the chorus. And do you want a slow song or a fast song? I would just pick one that you really love and could listen to over and over, Beat It, Rock With You, Black or White, The Way You Make Me Feel, those would be nice ringtones. :]