Lady Gaga and Diane Warren co-wrote 'Till It Happens To You' to address the very serious subject of rape, and now rape victims are expressing their heartfelt gratitude. The song was used in a docu-film about rape in U.S. college campuses, called "The Hunting Ground", and features four victims of rape. These four victims sent a letter to the two composers saying "The release of your song will have an unparalleled impact on the culture of campuses nationwide". Imagine a survivor who, after hearing your song, no longer feels isolated or alone. Picture that survivor's friend, telling that survivor that it's not her fault... We want to thank you both for having the courage to write and perform this song and for allowing your talent, your music, your lyrics and your voices to tell our stories." And not only these four women, but rape victims world-wide have taken to social media to thank the writers of this song, saying it has impacted them and those around them. Have you heard the song?

Do you think it is possible for a song to make a big impact on the way people feel and think about certain subjects?

This list contains the ten most influential songs that have actually changed history or became the anthem for a movement or cause--meaning these songs have garnered enough attention and received heartfelt gratitude and changed people's lives for the better. How many of these songs do you agree should be on this list?