It's been more than a year since Bersa Discos released a new slab of vinyl, but the West Coast imprint with roots in Buenos Aires' electronic cumbia scene can still be counted upon as a premiere outlet for forward-thinking cumbia and Latin dance music. Label founders Shawn Reynaldo and Gavin Burnett (a.k.a. Oro11) remain at the helm of Tormenta Tropical, the monthly San Francisco party which has served as ground zero for the so-called tropical bass scene. The songs on Bersa Discos #7 may be new to many, but they have all been battle-tested on the white-hot Tormenta Tropical dancefloor. Side A features Buenos Aires producer DJ Negro, a mainstay in the city's cumbia circuit who first appeared on wax back on Bersa Discos #2. His knack for energizing old-school Latin classics with heavy bass and an eerie, psychedelic vibe remains unchanged, as the record includes his takes on 1970's pop smash "Porque Te Vas" and Andres Landero's "Sabor a Gaita." Rounding out his contributions is "Demencia," which features chopped n' screwed vocals en espa�ol and just might be one of the darkest, heaviest, and spookiest slices of cumbia ever created. The flip side of Bersa Discos #7 comes courtesy of the relatively unknown El Nosotros, a Montreal-based producer who first honed his chops in a number of indie, punk, and electro bands. It wasn't until he traveled to Chile and discovered some Latin classics while digging for records that he was inspired to start the El Nosotros project as an outlet to explore different facets of reggaeton. Side B includes three of his creations, including bass-loaded re-works of a vintage cumbia anthem ("Tu Cucu"), sexy '70s pop ("Mar, Sexo y Sol"), and late-'80s teen pop ("Girl").