I will suggest four artists.
Bright eyes, Death Cab for Cutie, Postal Service and envy.
Bright eyes has some really great lyrics and the songs are fun and very emotional
Death cab for cutie has very poppy songs and a few slow ones, quite catchy and heart warming!
Postal Service is the singer of Death cab and another guy making some more electronic sounding music..
envy is pure emo. Pretty much like EF that MFDC12 posted (EF is from sweden whoop!). I'm afraid you won't like envy though. epic songs, spoken japanese "poems" and screaming.
Bright eyes - A perfect sonnet
Death Cab for Cutie - Tiny Vessels
Postal Service - The District Sleeps Alone Tonight
envy - worn heels and the hands we hold (please listen through it all atleast once)
I just came up with a bonus song if you like classical music: Ólafur Arnalds!
Ólafur Arnalds - Hægt, kemur ljósið