Mother May I, written with Mark Ronson, is full of soul but a bit of a dirge, and his sampling of what must be one of the saddest TV theme tunes - Taxi's Angela - on Sign of the Times doesn't do much to increase the frivolity, though its familiarity is welcome.
Given what has been going on in his personal life, perhaps the deflated tone is understandable, but the best track here is the upbeat Est. 1980s, full of pop culture references, like a music-themed We Didn't Start The Fire (and Billy Joel is namechecked here too).
All up, there's enough trademark CeeLo Green magic to make this a worthwhile listen.