Freedom songs were songs that used tunes people already knew which were given new words or implied new meanings to the text

True

Explanation:

Martin L. King Jr. described the freedom songs like this :

"They invigorate the movement in a most significant way ... these freedom songs serve to give unity to a movement."

Although I cannot see a real question here I answered that it is a correct statement because those were the tunes that everyone knew or they are catchable so everyone could sing them and by that, remember the lyrics.