Please help!!!! it's urgent....?

so yesterday our x-principal sister Marian Teresa died. and the orientation of new students is ahead.we were preparing for the orientation program.but as our x-principal suddenly died.so our sister wants us to change our song and they want us to sing something dedicated and in honoring sister Marian Teresa. so please suggest some good songs for it.we almost were finished with our song but now suddenly they want us to change the song but suddenly today they told us to change the song and i am in leading our group so by tomorrow i have to show some songs to them. so please please suggest some very good song in honoring sister.