Alternate glyphs are used in the logo (see K, n and r) and for the second 2 in the red text on the right.
Logo and booklet designed by Velimir Milenkovic (EINS RAUF) for Knobs & Wires, a synthesizer festival that was held last June in Munich, Germany. All text is set in Blaze Type’s Surt, a typeface that comes with radically square and circular alternate letter shapes for some of its characters.