Berlin-Brandenburg native Fiedel presents Substance B on Ostgut Ton. The eponymous "Substance B" is a high-energy, raving techno belter built around a bouncy bassline motif, with additional percussion and bubbling acid lines slowly swelling. "Track 432" evolved and assumed shape based on a phone-recorded sketch. Melody-wise this seven-minute lush, deep yet functional cut is reminiscent of shrill sirens, soon intertwined with cowbell jabs, sitting atop a banging kick drum and staccato-stabs. "S-Drive" closes this record with a tidied up and slower jam: it's prancing, mesmerizing synth melody is accompanied by a subtle kick and syncopated snare.