There are at least 4 artists called Serotonin.

1. Serotonin was a pioneering hybrid of early emo, math rock and hardcore from Tennessee, US. They were active from 1996 to 2002 and their major releases can be found at http://serotonintn.bandcamp.com/ .

2. Serotonin was an old school hardcore rave music project by UK's DJ Krome & Mr Time.

3. Serotonin is an industrial gothic metal band from Dundee, Scotland. http://www.myspace.com/serotoninmetal

4. Serotonin is a British depressive shoegaze project.

5. Serotonin is a black metal two-piece from the Netherlands. digitalserotonin.bandcamp.com/ Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.