Three of which are covered above, the other of which is covered in this article by The Local Voice.
The article also features an interview with Aaron in which he reveals an interesting fact -- he doesn't write his own lyrics, but rather has "people that work on my behalf and write songs for me". While some may criticize any artist who doesn't write their own songs, I think it's admirable that he doesn't claim to do something he doesn't. The fact that he doesn't write all his own lyrics also doesn't discredit his own artistic talent, as he's revealed at past concerts that he taught himself guitar, does have some songs he seems to have written himself (one of which is featured in this video we posted), and mixes his own beats.
That's not the only interview Aaron was featured in this week!
On Monday, Aaron discussed his music and brings up who wrote some of his songs again, as well as performs, in a two part interview for Music Monday on the DailyBuzz.