The Double- Bass district was in need of some filling out. Though not too much. The district is a cavernous subterranean power station of sorts. The Double-Bass strings operate like power cables, lighting up when vibrating, but they had to attach to the floor somehow. So here are some ideas for structures anchoring them to the floor and walls.
The multi- levels of thumbnail 5 have been chosen as the main base styles.
Secondly I embraced the concept of some Double- Bass Turbines. These machines will each dwarf Red in the huge space.