Do you know truly beautiful songs? (Please read description! :))?

I am a dancer and I want to do a lyrical solo to a song with mostly piano and some violin. It has to be a female singer because I want to make it more believable that I am "telling a story" through dance. It has to be appropriate, so no bad words and bad meanings please! :) I haven't found anything that I hear and just think "THAT'S IT!" yet, and it might be my last solo so I want it to be perfect. Any suggestions? Even if it's not exactly my description, I'll take anything. :) THANKS!!! I appreciate it more than you can imagine! (P.s I also love boyce avenue and other artists' songs that were fast but they re-do them to be more lyrical and slow with gorgeous piano and stuff!)