Have seen a few of the performances, so here's my arseho......I mean opinion:
Florence: Just awful, shouty and not in a good way.
Taylor swift: Limp, loads of vocals on track despite 4 BV's, one dance move, disingenuous crowd banter.
Billy Ocean: Three songs that I love, good band, but he had a habit of singing one song awfully, then one excellently, then one awfully, then one excellently....you get the idea.
Christine & The Queens: Genuinely excellent, fantastic singer, really interesting to watch, a few really nice simple tunes with great melodies.
Paloma Faith: Another meh from me......she's kinda interesting, but doesn't quite get over the line for me. Decent band though.
30 Seconds To Mars - WTF? Rock band, turns up with drum kit, another guy on keys and sometimes bass, then EVERYTHING else on track (all guitars, BVs etc). Total poop (despite some big songs).
First Aid Kit - Decent country rock, strong vocals, great band. Thumbs up.
Beck - Despite only knowing one song (I know right....my bad), and not having Mr Meldal-Johnsen anymore, really enjoyed it, slightly odd 'covers' section to introduce the band, but whatever. Great set, great band.
Si