Their sound is very smooth and nicely blended. There are several tiny pitch-glitches that occur throughout. Nothing major, but it's not perfect. The sound production is definitely first-class, having no problems that jump out at you. I guess that statement is true but a little misleading.
All sounds are human sounds, but played back by a machine.
It's not a big deal, but gives the sound a Nylons sort of drum-machine feel. Overall, this is a very solid album. There is some fine singing and arranging here. Naturally Seven is a perfectly named group. Totally at home in their voices, mature and confident in their repertoire, the seven members sound like they were born to sing these songs.