I need a song to sing for me exams this year! Can bạn help?

Im doing exams this năm and for âm nhạc I need to sing two songs, I already have one bởi Taylor nhanh, swift but my teacher đã đưa ý kiến It cannot be bởi the same singer, so can bạn help me pick another song.

P.S I cant sing high pitched songs, hoặc really slow low pitched songs. Thanks!!