This just killed a lot of my excitement for the album. Song About You gave me a lot of hope that they were mixing up their sound a little bit more, but these previews all sounded way too similar to me.
Nice Choice, Nice Life is the track Mark Hoppus is on. Looks like he's just doing background vox and harmonies on it but you can tell from the preview it's definitely him. The clip continues pretty much from where they cut the song off in the video above me.