Don't know that I have 10 but I know what a bunch of them are in no particular order. Most of my favorite songs are about social justice. Most songs, even great songs don't really matter much. They are about loving some girl and losing her and what not and in the end just don't make the list for lack of significant content. I'm a bit agnostic about who sings a given song as long as it's an honest version by a decent singer.

Marvin Gaye - Inner City Blues

Marvin Gaye - What's Going On - Sung by Less McCann,

Marvin's version is just as good but hardly anyone has heard Less's version so why not, it's fantastic and it leads into my next song.

Less McCann - Compared To What,

Roberta Flack killed this song on her first recording (which Less produced), if you like the song it's worth a listen. I had no idea that this performance was filmed, RAD! It's my favorite live jazz album, big Eddie Harris fan.

Sam Cooke - A Change is Gonna Come - Sung by Otis Redding,

Sam Cooke, Otis Redding, Baby Huey all did great versions, I'm sure another dozen soul singers did great versions. This is probably the version I've listened to the most times in one day, always fucks me up inside.

Grand Master Flash and the Furious Five - The Message.

The greatest rap song of all time in my estimation. I should probably let a few more rap songs into my top ten but I guess none of them are top tens of my heart yet.

Zappa and the Mothers - Trouble Every Day

Stevie Wonder's "Songs in the Key of Life" has no one song that makes this list but has a lot of content that feels like the stuff on this list to me, same with most of Gil Scott Heron's better material. Some of The Last Poets stuff comes close as well, but is just too edgy for me to feel comfortable saying it's in my top 10.

Now a few that break from my social justice theme but are all time favorites.

Leon Russell - This Masquerade

Lots of people have covered this, to little success in my opinion.

Townes Van Zandt - Nothin

I can't think of anything else. Lots of great songs but to be a song of my heart of hearts is rare.