Clepsydra released its fourth album ,"Tropicarium", in May 2015 on the label Go Down Records. The album is enriched by the sound of a new member: Sandro Abbondanza playing the Fender Rhodes and organ. Tropicarium, developed with the artist Andrea Di Felice and the DJ Andreas Mathis (both participating in lyrics writing), is a work starting from basic embryonic concepts such as a pencil sketch, a trip, a sound, a smell. This particular approach started a kind of "beehive" where everyone has raised their own "species", making the 13 tracks visible through the canvas painted by Di Felice. The balance of the "Tropicarium" is held firmly by the awareness that everything is cyclical and that what we lose will be found for sure somewhere else.