New albums: Coldplay; R. Kelly; Jim Lauderdale

Coldplay goes disco is the three-word shorthand that pretty much sums up the bombastically mild British quartet's seventh album. It's a deliberate yang to the yin of 2014's Ghost Stories, a head-down-at-the- piano (though, of course, ultimately uplifting) platter occasioned by the breakup of Chris Martin's marriage to actress Gwyneth Paltrow. (Just so we know how evolved and getting-along-nicely-for-the-sake-of- the-kids the exes are, Paltrow sings backup on Head's "Everglow.")