A mixing desk, rotated to scroll

Each stage is a full-width channel strip with its controls laid out across its face, and the strips stack down the page in render order. Collapse any strip to a one-line readout to keep a deep chain legible; drag the rail handle to re-route. Generation pins the top, the master strip — envelope, trim and an enlargeable waveform — anchors the bottom. The desk metaphor stays serious: faders and switches, no skeuomorphic wood.