After a TrackDrum hit, ←/→ flip between the Menu Band membrane and an Electro kit (909 kick chirp, Simmons tom, 909 snare + clap, 606 hat, 808 cowbell) on the same five concentric zones. The kit's name and number flash over the pad; it has its own neon ring artwork. The percussion voice gains pitch sweeps, exponential decays, HP/BP noise, the six-oscillator 808 metal bank, tanh drive and delayed onsets. Each Electro zone is loudness-matched at runtime (BS.1770 K-weighting, seeded renders) to the membrane's zone; a test holds every pad within 0.1 dB. Chromatic percussion (celesta, glock, vibes…) now rings out under Shift/Caps linger instead of the stuttering retrigger tail.