An idea: use sound bars (similar to the sound bar icon in front of the "MUSE" topic on the front page of this forum) roughly in the shape of an M. You could have four or five sound bars with the first and last being taller than the middle ones. For instance, the bar heights from left to right could be given by 4, 2, 2.5, 4.5. Then, the logotype word "MUSE" can appear to the right in some contexts. This could work in black and white as well as with different colors for the bars. Hopefully someone artistic here can take this idea and see where it goes...