Kalma Ahdistus is an experimental project of Conclude's vocalist Keiichi. It has released four EPs in total; the first came out in 2006, and this, the latest one, in 2011. I haven't yet gotten acquainted with KA's earlier works, so I cannot comment whether its style has changed over the years or not.
The opening one-minuter "Musta" is a bleak song that mixes droning ambient together with screeching noise. Some of the noise is heavily distorted, some are just manipulated sweeps, but they come together rather well on the brief tune. The following song takes a whole another direction. It has a cheery, poppy feel due to some echoed synths, as well as the vocal high-pitch vocals in the distance. Heavily distorted digital beats douse the song in catchy rhythmics to make it's happiness seem even more disturbing. The song has a rather vast soundscape which ranges from many digitally distorted beats and effects to clearer bass-thumps, along with the aforementioned synths. It's catchy, bizarre, and so much information is packed in its two-minute length that the listener will remain confused.
The third song is like a toned-down and darker version of "Vaativan Pikadonin Paluu"; the beats, vocals and electronic effects are more sane, normal and minimal, and the song has a lot bleaker feel. The echoing male howls give the song a lot of its feel, and it serves as a good follow-up to its more overwhelming predecessor. The EP ends to a minute-long noise punk-tune with electronic drums and a layer of digital distortion covering it. "Rappio" is a catchy, simplistic, and fittingly noisy tune to end "IV."
I've listened to this EP for easily over ten times already, and I'm far from becoming bored. The electronic sounds are suprisingly plump and professional, which creates a good contrast for the harsher and thinner distortion. The songs blast forward relentlessly and without stopping to ponder if they're acceptable or listener-friendly, or if they overall make any sense to anyone else but their maker. They have a lot of detail and depth in them, which makes the EP suitable for repetitive listening despite its short length.
Even though the somewhat cheap digital distortion causes unintentional loss of detail when playing the EP loud, it's overall a great one. It's concise, information-filled and bold, and comes with minimalistic artwork done with style. Do note that reading the short and despair-filled lyrics might help you a lot in understanding what "IV" is about.