Galaxy arms Part two

SONG of SONGS: Timeless love poetry in contemporary calligraphy. 
Galaxy arms Part two: 
After comparing total randomness with strictly repeating pattern, I combined the two ideas.  The four different swaths I ended up making were based on spiraling galaxies, the DNA double helix, two twined colors, and an irregular sine wave that faded in and then faded out. In each case, the pattern formed against a background of random dots.  

I wanted the galaxy arms to have a similar texture to the lines of lettering--not too dense or too light--and to in some way echo the words in both form and content.