I listened to the band Sanctus Real, which plays Christian rock/alternative rock. (I think everyone knows that when it says Christian rock or emo, it refers to the lyrics, not the music. In this case, the band plays alternative rock, and most of the lyrics are religious in nature, although not all of them, of course).
The first two albums, Message for the Masses and Nothing to Lose, are similar in sound and even in quality (unfortunately, the sound quality is not great). But that's okay, because the third album, Say It Loud, contains half of the songs from the second album, and they are in good quality. The music is quite ordinary, just rock, and a couple of songs even sound like punk rock. Next, there's an EP called Sverigeep, which contains three acoustic tracks, one electronic remix, and a brand new song. The fourth album is called Fight The Tide. It's a bit different from the previous ones in terms of sound, as it's softer in terms of music, more pleasant to listen to, and more melodic. The fifth album, The Face of Love, and the sixth album, We Need Each Other, are similar to the fourth, and this is where the most interesting stuff begins (in my opinion). The seventh album is called Pieces Of A Real Heart and was released last year. Overall, the album continues the traditions of the previous ones, and the music in it has become even softer and more pleasant.
There are many good songs, but some of them I liked more:
Whatever You're Doing (Something Heavenly)
Thank You
Magnetic
Dear Heart
Lead Me
Keep My Heart Alive
The Redeemer
I'll Show You How To Live
Where We Belong
The Face of Love
Fly
You Can't Hide
The Way I Feel
Mostly, these are songs from the latest albums, and most of them are calm. I usually always notice ballads right away and "fall in love" with them, while faster and harder songs need to be listened to longer for me to like them and get hooked. Although, that's not always the case)