Alongside Kim Seung-jae's departure, their primary songwriter, Windmill, also didn't return for I Do so the album was produced with the help of a bunch of songwriters for hire, but they largely stick to the musical style that's worked so well for Acoustic Collabo so far and An actually steps up and contributes three songs herself, composing, writing lyrics, and arranging them entirely, adding a bit of continuity to the album's voice.
Unfortunately, the resulting album feels just a little more generic than their past two works and part of that is because it starts so with "휘피람", a rather plain piece of slow acoustic pop that somehow gained the status of single. The second track, "응원가", opens with a more familiar acoustic guitar push and asks more of An, even if it's not much, but the little more required of both An as a vocalist and Woody Kim as a guitarist, backed by some light percussion and guitar backup results in a more enjoyable piece.
It's actually unsurprising that "응원가" is more vocally demanding though, as it's written by An and the other two pieces by An, "사랑한다 말할까봐" and "Dream" both give her vocals plenty of attention and push them, even though the latter two do push a bit further away from the acoustic pop sound into ballad pop territory, only kept in line with the rest of the album by a limited arrangement, but elements like the synth-strings on "사랑한다 말할까봐" and the generally dramatic ballad pop melody of "Dream" do feel at the verge of departure for the group.
The production on I Do is a bit more shiny and straight pop-oriented than past albums, adding much more instrumentation into the arrangements, like the keyboards and percussion elements on "My Heaven" or the presence of piano on a number of tracks. This does pull the album a little further away from the "acoustic" part of the duo's sound, but I can see how it makes the duo's sound even more appealing for mainstream consumption and the presence of the acoustic guitar at the center of the arrangements does keep the duo's sound at least somewhat grounded.
There aren't any standouts here, but as with Acoustic Collabo's previous EPs, I Do benefits from being relatively brief at nine tracks if you don't count the instrumental versions at the album's end and totaling about thirty-three minutes. Unfortunately, the push towards more mainstream pop sounds in arrangement, while perhaps making the album more appealing in terms of production, also kind of makes Acoustic Collabo sound a bit more like generic pop and I Do isn't particularly distinctive as a result. But it is still precisely the kind of undemandingly pleasant coffee-shop acoustic pop that would probably satisfy those that would pick up an album by a duo named Acoustic Collabo. 7/10
- I Do
- 사랑한다 말할까봐
- My Heaven
- One More Kiss
- Love You
- I Do (instrumental)
- Dream (instrumental)