A2O May's latest single earns the strongest review yet
On 18 October 2026, The Bias List published its review of A2O May's Bad Habits Tonite, with critic Nick describing the track as the group's strongest single yet. A2O May are presented as a global group within Lee Soo-man's A2O project, and the review notes that they had been releasing singles for a couple of years outside Korea before this release.
The review's timing matters. The same week, A2O Lite and A2O Soul also released tracks, and The Bias List frames the three releases as part of a wider moment for the project. Nick's argument is that A2O May may have been holding back their best material until the entire project was ready to launch, and that Bad Habits Tonite arrives as evidence of that patience.
The review awarded the song a B+ grade and an overall score of 8.75, with category marks of 8 for hooks, 9 for production, 9 for longevity and 9 for bias. Those numbers are the reviewer's own assessment rather than chart data, but they establish the tone: this is a positive review that still finds room to distinguish between a strong hook and a fully realised production.
Yoo Young-Jin's synthpop production takes centre stage
The biggest factor in the review's enthusiasm is the involvement of producer Yoo Young-Jin. The Bias List describes his presence as a re-emergence, noting that he was credited on older A2O May tracks but that Bad Habits Tonite feels like the product of a producer who has been building an arsenal of material. The review characterises the song as a sleek synthpop banger, with vocal arrangements and mixing that carry his signature.
Nick also places the single in relation to Neon, framing that earlier track as a response to K-pop's girl group sounds and Bad Habits Tonite as a more outward-facing olive branch to the wider world. The review is careful to say that this makes the song less specific and slightly more generic, but it argues that the execution is delivered with panache and polish. In other words, the critique is not that the song lacks identity, but that its identity is broader and more welcoming.
That distinction is useful for listeners. A song that aims for a broader pop audience can lose the sharp edges that make a particular act distinctive. The Bias List's assessment is that Bad Habits Tonite avoids that trap through production detail and vocal performance, even if it is less idiosyncratic than Neon.
A song built for listening, not just challenge clips
One of the review's central claims is that Bad Habits Tonite is a full-fledged song rather than a collection of hooks designed for short-form video. Nick compares it to A2O Soul's Superstar, pointing to a bridge and a sense of progression as evidence that the track is built around what is best for the music.
The review argues that the song is driven by singing and that its choices are not dictated by the requirements of TikTok challenges. That is a craft argument as much as a musical one. In a singles landscape where tracks often front-load their biggest moment, a bridge and a sense of progression can signal ambition and confidence.
The review treats those features as refreshing, and it links them to a broader hope that the industry is returning to the values that made K-pop compelling in the first place.
This is interpretation rather than a measured fact. The Bias List is making an evaluative case, not reporting on chart strategy or release planning. Still, the case is specific: the reviewer identifies structure, vocal performance and production as the elements that separate the single from more disposable fare.
What the score does and does not tell us
The score breakdown is worth reading closely because it shows where the review's enthusiasm is concentrated. Hooks receive an 8, the lowest of the four categories, while production, longevity and bias each receive a 9. That suggests a song that the reviewer finds impressive in its construction and staying power more than immediately hooky in every moment.
The overall 8.75 and B+ grade place Bad Habits Tonite in strong but not flawless territory. The Bias List's rubric is subjective, and the categories belong to the reviewer's own framework. Readers should treat the numbers as a listening guide rather than an objective ranking. The more useful signal is the review's language: strongest single yet, sleek synthpop banger and delivered with panache and polish are the phrases that carry the argument.
For anyone deciding whether to seek out the track, the review's practical suggestion is that the song rewards attention to its production and vocal arrangement. It may not be the most hook-forward single in the A2O catalogue, but it is presented as the most fully realised.
How A2O May fit into the wider A2O rollout
A2O May's release is not happening in isolation. The Bias List notes that A2O Lite and A2O Soul both released killer tracks in the same week, and the review frames the three releases as part of a coordinated moment for Lee Soo-man's project. A2O May are described as a global group that has been releasing singles outside Korea for a couple of years, which makes their position within the wider rollout distinct.
The review's suggestion that A2O May were holding back their best material until the project was ready is an interpretation, not a confirmed plan. But it helps explain why Bad Habits Tonite is being received as a statement rather than a routine single. A multi-unit project can use a week like this to show range: different groups, different sounds, and a shared standard of production.
That structure also gives listeners multiple entry points. Someone drawn to the glossy synthpop of Bad Habits Tonite may find a different side of the project in the A2O Lite and A2O Soul releases. The Bias List's review is enthusiastic about all three, which is why it treats the week as a moment worth noticing rather than a single-track story.
The takeaway: polish and structure over novelty
The takeaway from The Bias List's review is that Bad Habits Tonite is a polished, vocal-driven synthpop single with a structural argument behind it. Nick's B+ grade and 8.75 score are positive without being unconditional: the song is described as less specific and slightly more generic than Neon, but also as the strongest A2O May single to date.
Those two ideas can coexist. A track can be broader in appeal and still be well made. The review's emphasis on Yoo Young-Jin's production, the vocal arrangements and the bridge suggests that the song's value lies in craft rather than novelty. For listeners who care about how a pop single is built, that is the reason to pay attention.
Whether Bad Habits Tonite becomes a landmark for A2O May or simply a strong entry in a busy rollout will depend on how the project develops. The Bias List's review makes the case that this is the moment the group's material has caught up with the ambition around them.