Doh Kyung Soo has one of the richest tones in K-pop, but as with so many great voices his solo music has usually steered toward ballads and coffeehouse-ready midtempos. There’s nothing wrong with that, but the style doesn’t exactly inspire excitement. Teasers of his first full album seemed to promise a more diverse set of sounds (and tempos!) and the bouncy Sing Along! takes a gentle hop toward that.
For this song, Kyung Soo’s paired with Zico as a songwriter/producer. This isn’t a collaboration I would have expected, nor does Sing Along sound much like what I’d anticipate the two of them making together. It’s a fun, upbeat pop track with tropical undertones and an occasionally chanted element that stays just clear of becoming a cheesy, Lion King-esque affectation. Afrobeats percussion becomes more prominent as the track goes on. A greater and earlier emphasis on this groove would have benefitted the song.
While Sing Along doesn’t take full advantage of Kyung Soo’s voice, it’s nice to hear him flex those vocals over a more energetic rhythm. However, an early album teaser featured house music as a backdrop and ever since hearing it I can’t stop thinking about how perfect his vocals would be when ripping over a dramatic 90’s dance track. It’s not fair to review a song based on something it’s not even trying to be, but Sing Along‘s amiable, skip-along niceness is not nearly as compelling as so many other genres could be. The song is pretty innocuous and it could be so much more.
| Hooks | 8 |
| Production | 8 |
| Longevity | 8 |
| Bias | 8 |
| RATING | 8 |
Grade: B-
The Bias List // K-Pop Reviews & Discussion 
Can you imagine him on a Free Somebody or Galaxy track? This music is not my thing, but as always, he sounds great. A 7.5 from me.
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It’s cute, actually has a Disney vibe to it now that you pointed out the Lion King parallels, though not exactly something I’d seek too often. Just harmless head-bopper that doesn’t go all out.
Rating’s the same.
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I think it makes for a fine happy tropical summer song fluff, as long as I don’t overthink it. … like how at times the refrain sounds like an ad for a tropical fruit juice cocktail.
Rating is about right.
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Hi Nick, have you listen to BTOB Yook Sungjae recent solo work? He has pre-release ‘Lie’ and mini album All About Blue with title track ‘At Last’.
Btw Lee Changsub also just released a summer bop single yesterday with ‘Vroom Vroom’.
BTOB members are so productive this year as HUTA also have a comeback this month scheduled on 21.07.2025
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Nick wrote a review for Vroom Vroom earlier today.
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I love Kyungsoo’s voice and I’m greatly appreciative of the different genres this album presents us.
I’m still in two minds about Sing Along (not helped by the awkward phrasing; think your rating is about right) – it’s definitely more upbeat than anything else he’s sung solo, but his original choice of title track was Do You Remember, which I enjoy more.
Too many favourites to name, but Love to Love U, which is essentially just him and a mic, reminds me so much of the old-time crooners like Nat King Cole.
In all, a solid first full album.
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