Producer Switch sashays through a bunch of styles, taking on orchestral disco, blues, funk and even a little dubstep with a bright confidence.

"[11] Slant Magazine's Zachary Hoskins wrote that while "sometimes the production steals the spotlight a little too much [...] much of the credit for Hello Happiness's relentlessly good vibes goes to co-producers Switch and singer-songwriter Sarah Ruba Taylor, who plunder the sounds of Khan's 1970s and ’80s output for a mélange of styles and textures.

"[14] Michael Cragg from The Guardian felt that the album "pays respect to Khan’s funk and disco heydays, drawing a through-line via modern production’s showy window dressing.

Even when a surplus of synthesizers, organs, and flame-throwing guitars threaten to overtake her elsewhere, she cuts straight through with full-tilt, life-affirming power.

[9] Pitchfork's Jackson Howard felt that the "album largely ignores all the qualities that made the Queen of Funk a legend in the first place [...] Instead of emphasizing the live instrumentation, hair-raising harmonies, and goosebump-inducing modulations of Funk This, the 2007 album anchored by longtime collaborators Jimmy Jam and Terry Lewis that maximized her talents, Hello Happiness is a messy, overproduced, anonymous set of hotel-lobby beats that makes woeful use of one of the greatest voices of all time.