If anyone doesn't know the story behind the songs, here it is:
Lífið kviknar á ný: The singer and composer are a couple, the singer was listening to some songs the composer had made and found this song, the compser was originally going to compete with the song in Melodifestivalen.
Til þín: The composer was going on a trip for a while so he wasn't going to see his family for a while, so before he left, he sang this song to his children.
Þangað til ég dey: On the final day of the submission deadline, this group of guys decided to meet up and make a song for the contest, the song was submitted 5 minutes before the deadline and the band was made just for this occasion.
Aðeins ætluð þér: The 2 composers often submit songs to the contest, but this time they had to do it between countries. (sorry for so little information but there was a problem with listening to the interview).
Enga fordóma: The guys competed in the contest before in 2003 coming in 2nd place, they were wondering what went wrong, they figured out that toddlers (pollar) didn't vote for them, so they made "Pollapönk", they have songs people at any age can listen to and after 11 years they return, and decided to send a message to stop all prejudices.
I know that some are a little longer than the others (Pollapönk) and some are a little shorter (Aðeins ætluð þér), and that is because of internet problems and some people gave a lot more of information than others.