Some walls are made of stone / Sometimes we build our own
About the Song
The chords for the bridge in early editions of Rise Again are incorrect.
Kennedy & Rose (who wrote the song) play the bridge in C as:
Am - F - C - - - / Am - F - G - - -Peter, Paul & Mary change the melody on the bridge and play:
Dm - G - C - Am - / C - Em - Dm - G -
P, P & M also changed the title on their recordings to "Some Walls".