I love listening to Hop Along, an indie folk-rock bank from Philadelphia.  Have you heard of them?
I've never heard of them. What are some of their songs?
One of their more popular songs is called "Wretches" in 2009 and "Get Disowned"  in 2012, winning high praises from the music community. 
Huh. I'll have to look those up. I do like indie folk-rock. Are there any other folk music bands you can recommend?
Given that the genre emerged from really popular bands in the past, one of my favorite indie folk-rock band group I would recommend would be Bob Dylan in the US.
Bob Dylan is a legend, for sure. Even if he kind of talks more than sings. I really enjoy the messages in his songs. 
Totally agree - he was a voice of the generation with his songs, "Blowin' in the Wind" and "The Times They Are a-Changing".