Jay Kay hired a replacement, Nick Fyffe, who previously played in a Jamiroquai cover band,[2] and the album was re-recorded.

"[4] The opening track, "Canned Heat", has "svelte Chic Organisation strings, a percolating bassline and a stomping four-on-the-floor rhythm".

[6][7] The next track, "Black Capricorn Day", has a "driving funk groove with sassy horn interjections" which tend to "stutte[r] like a record on a turntable", with its lyrics about being depressed.

[5][11] The seventh track, "Supersonic", has a "didgeridoo and dobro drone against electronic percussion and a squiggling synth bass, all of which builds to an hallucinogenic mid-song samba break.

"[10][5] The "multirhythmic" track "Where Do We Go From Here", has an "energetic progression broken by catchy and uplifting choruses with staccato interplay between the horn section and guitarist Simon Katz".

According to John Bush of AllMusic: "Kay [continues his] fascination with club-bound music of the 1970s -- from disco to jazz-funk to rare groove to later Motown -- but also shows signs of maturity.

"[55] Tony Farsides of The Guardian remarked that Synkronized's "hard and nervy uptempo disco feel reflects the frantic atmosphere surrounding its creation."

"[60] Spin gave the album the same rating, claiming "...redirects the band's British tendency toward smoothed-out old black jams....soaring strings, gyrating congas, hell-bent wah-wah's, and an undeniably live rhythm section that'll hustle your muscles and make you freak to the beat..."[61] Entertainment Weekly claimed: "Imagine if [Stevie] Wonder had made a disco album in 1977!....Synkronized is a hat trick done with the sharpest chapeau in the store.

"[57] College Music Journal claimed: "This incessantly upbeat expedition travels into the regions of Travolta-era disco...feverish funk...and instrumental iridescence...keeping your ears tuned to their funktastic audio adventures.

"[66] Edna Gundersen of USA Today wrote that "while the band's fourth album does boast a few jamming grooves, especially the brassy Black Capricorn Day, most of the tracks are to funk what Pop Tarts are to soul food.

"[67] Writing for Las Vegas Review-Journal, Tom Moon wrote that "the liquid, slippery grooves are paramount, though they're sometimes buried under mountains of strings and arrangements that are a tad too busy."

"[68] In his consumer guide for The Village Voice, critic Robert Christgau gave the album a C− rating in his annual "Turkey Shoot",[62] indicating "a bad record of some general import".

[69] All tracks are written by Jay Kay and Toby Smith, except where notedCredits for Synkronized adapted from album liner notes.