Gabba Front Berlin are a German hardcore techno band, specifically producing tracks falling into the gabba and speedcore categories. Sometimes they are known just by their initials, GFB.
The group consists of Steffen Reinecke, Ralf Schwarzenberger and Stephan Seidel and formed in 1996 after originally meeting up a few years previously in a Berlin nightclub named Bunker.
Although they have released a number of commercial tracks, nearly all of their music is available free on their official website.
In keeping with their genre, tracks of theirs frequently have high beats per minute (BPM). Lacrima Mosa Est, for example, has 480 BPM, although over the bass is a contrastingly slow ambient sound. A sample of this track is available in the Speedcore section of Ishkur's Guide to Electronic Music.