...Gosh, where to begin? XD
Here are a handful:
First is Lydia, from the album "Illuminate." I adore the art style, and it's got this amazingly melancholy feel to it. I just love it. XD
Next is LIGHTS, from her debut EP. The bold colors and the illustrative quality are awesome. XD It really matches the style of her music, and I also love that she drew it herself!
Next is "The Everglow" by Mae, original cover. All of the art in this album is spectacular, though. XD <333.
After that is mewithoutYou's "Brother, Sister." The album art is so detailed, but it doesn't look like it from a distance. Unfortunately you can't really see that from the thumbnail. XD
Next: "Mary Ann Meets the Gravediggers and Other Short Stories" by Regina Spektor. I'm a huge fan of any illustrative album art, and this is a good example of that. XD
I have more, including Showbread's "Age of Reptiles," Explosions in the Sky's "All of a Sudden I Miss Everyone," The Decemberists' "The Crane Wife," Sherwood's "A Different Light," and Sufjan Stevens's "Come On! Feel the Illinoise!," but the last one I'll post is Five Iron Frenzy's "The End is Near/Here." So awesome. XD
I'm sure there are a lot more, but those are a few that always strike me when I see them. XD