It depends on how you define "change":
1. One to change the lightbulb.
2. A dozen to debate whether the new bulb affects the room's acoustics.
3. A few more to compare the warmth and brightness of the old bulb versus the new one.
4. Another group to insist that the lightbulb brand matters for optimal sound quality.
5. Finally, a couple to argue that only an incandescent bulb can produce the true vintage sound experience.
