Kreuzberg Audio was founded in Berlin in 2025 by Frank Hahn, a veteran of the German music industry with more than twenty years of experience in music and technology.
Frank worked for companies such as Musik Meyer, Korg & More, GSM Multimedia and inMusic. Together with Toshi Nakama, then CEO of Vestax, he played a key role in developing the VCI-100, which launched in 2006 as the world's first professional DJ MIDI controller. Almost every DJ controller since has followed its lead, and the VCI-100 marked the beginning of what is now called “controllerism”. He also developed the MC 1000, the first 4-channel MIDI controller without jog wheels and with a built-in 8-channel sound card.
Alongside this, Frank founded the blog DJ-LAB.de, which grew into the leading German-language online magazine for DJ equipment and electronic music.
As Giana Brotherz, Frank has been a fixture of the German drum and bass scene since 2000. He releases on labels such as Basswerk and Pathfinder as well as on his own label Giana Brotherz Recordings, and performs worldwide. As Diskotetris and under his real name, he produces everything from tech house to uptempo that has no breakbeats, and runs two more labels for these genres: Spreemucke and Bassmucke. In Berlin, he is part of the Riverside Studios community.
With Kreuzberg Audio, Frank now mainly develops standalone VST/AU plugins for all major DAWs, for producers and mastering engineers alike. Alongside synthesizers for acid and club sounds and a slice sampler for breakbeats, there are distortion and saturation plugins, creative filters, and generators for drum patterns, risers and sub bass. For mixing and mastering, there is multiband saturation with EQ and a spectral stereo widener with correlation analysis. An analysis tool splits songs into stems and detects tempo and key.
Kreuzberg Audio actually started with Bitwig Studio. Frank has been a committed Bitwig user for years and considers the Berlin-made DAW the most open and flexible music software on the market. Above all, its API, which lets you develop controller scripts and generative tools, is what led him to share his own scripts with the community.
This has grown into an expanding collection of controller scripts for Bitwig Studio. It includes melody generators with automatic scale detection and genre-specific presets, tools for emotional chord progressions, arpeggiators, and pattern generators for acid basslines in the classic TB-303 style, complete with slides, accents and stutter effects. Techno and hardstyle producers get screech pattern generators, and anyone working with breakbeats will find sampler instruments with precisely cut slices and built-in rhythm generators.
Because Frank has spent decades in the studio and on stage himself, his tools only have the features you need in practice.