Boca Negra is an album by the Chicago Underground Duo, featuring multi-instrumentalists Rob Mazurek and Chad Taylor.

"[5] AAJ's David Adler remarked: "Boca Negra finds Mazurek and Taylor wearing their multi-instrumentalist hats and tweaking their interplay with electronic enhancements, plotting out music of small gestures and bold, emphatic outbursts... there's a judicious balance of free acoustic blowing..., calming aural expanses..., dub and electronica references... and surging asymmetric rhythm.

It's spacey, spacious, and alternately jagged and milky... For a whack jazz record that uses a lot of strange noises and unconventional concepts, Boca Negra is also somehow accessible, too.

's David Dacks commented: "This album is the first in a few years for Chicago Underground, but the time off has only intensified the communication between Rob Mazurek and Chad Taylor...

"[10] A writer for Treble remarked: "Underneath the admittedly difficult surface of... Boca Negra, lies a radiating being, a pure and jazzy essence that cordially grants access to listeners who wish for it... Their music... offers an approach that is monitored yet frenzied.