INITIAL thoughts (we will see in a couple of weeks) :
AHFOD: Euphoric 80s rock; very U2ish (love it)
Birds: HLH and Lovers in Japan combined with a dash of Arcade Fire and Indie Rock (Love it, love it, love it!)
HFTW: A good Beyoncé song, an odd Coldplay song (can't get over the "drunk and high" lyrics even though they are metaphorical "life's a drink and love's a drug", but I love the arcade synths at the end, and I can't lie this has been the song that's been stuck in my head)
Everglow: I think it's very pretty, honestly.
AOAL: Funky disco music; gotta love it
Fun: It's like Mika doing a cover of Viva la Vida; Tove Lo actually makes a nice contribution; one of the better moments on the album; the "didn't we have fun?" lyrics are nice and definitely come from the original "Fun" which was given to Natalie Imbruglia (would have been a great fit here too and I'll just continue to wish that Coldplay redo "Lukas" and "Fun").
Kaleidoscope: nice transition (intro of it perhaps Radio Waltz?), nice poem; I wish more "Amazing Grace" was also included.
Army of One: I expected more since the snippet was pretty intriguing. I love the chopped up vocals, the electronic organ is also nice. I think it's only problem is that it's repetitive, yet if you listen close, the melody very much resembles Coldplay's older works.
X Marks the Spot: At first I was like "what the heck" then I was like "okay" then I was like "cool"; it sounds like Chris reading off some rhymes he got from Jay-Z and Katy Perry's lyricist; other than that, the music (especially that guitar) is actually pretty cool.
Amazing Day: the production is similar to the live version which is nice; the strings are quite gorgeous
Color Spectrum: a nice reprise of AHFOD intro and Kaleidoscope
Up&Up: saddened by the shallow production; it sounds like it features the Blue Man Group banging on pipes to make the "bloop" sounds, the chorus is not as euphoric, but at least the choir is audible. The guitar solos are still prominent which is nice; the ending is excellent though, very much like Charlie Brown's soft piano ending. Coldplay's album closers are all amazing.
So, overall, I like the album. It's pretty fun to listen to, and some stuff gets stuck in your head. I'd say there are very high points and low points, at times you'll love it, and at times you'll just hate it. Yet, isn't living life like that? If this album aims to portray life and all it's ups and downs, I'd say it does it perfectly.