Serotonin: creative expression in the form of sound waves, experimental music in a blender, selfless art, musical graffiti. London's Closed reviewed by JWalkingLady Magazine (April 2013) as: "...the first album to be recorded by Serotonin 10 years ago, born from the aftermath of tragedy and the anxiety that plagued American society at the time and inspired by the friends and world communities tirelessly dedicated to spreading positivity in the face of it all. Despite every broad attempt to control, stifle, and stuff down humanity at large, London’s Closed emerged from society’s margins in a truly original display of deep, honest, and unpredictable freedom! London’s Closed is experimental, electronic music for robots, if you are in a weird mood, or just want to expand your music horizons. At the same time, the album’s wandering instrumentals and lyrics evoke echoes of very human emotions that we can all relate to. At times upbeat and scattered, and then melancholy and reflective, London’s Closed is a good album to zone out to, or to play as background music while reading or studying. The album is definitely worth listening to all the way through, as a concerted effort to open our minds and allow creativity to thrive! The contrast between the album’s lamenting, stormy and electric robot blues and its terrestrial, imaginative celebration of freedom brings the listener to an uncensored, existential meditation on ideas of the new, different, and interesting variety."