unit blocks--planned randomness

In making a scrap quilt, there is planning done at the beginning, then messing with that plan and adding other rules as I go along.
When cutting down of scraps, one size I cut is 1 1/2 by 2 1/2 inches and finish 1 by 2 inches. This is the proportion of the unit blocks used in preschools.

Tonya Ricucci has a wonderful quilt "Ellis Island" using lots of odd prints. I loved the look of her quilt and used that as inspiration for this one. I stayed with her 1 1/2 inch width, but kept my length at 2 1/2 inches to use up some of the many, many pieces in my bins.

This quilt took 1920 of those patches-- 240 are red solids.
Each 4 inch block uses 8 of the unit patches.
I wanted the block to be not quite symmetrical visually, so I chose a setting (top) that had the red center off center.

After making a few blocks, I realized that in a layout the reds would spin in a predictable way (which I did not want) so I made a second block (bottom) where the center is in a different configuration. The red solid was always kept to the interior of the block.
Then, I made the 240 blocks.
I pieced the blocks into pairs first, with every other block set at a quarter turn.
This made for fewer seams to match.

I put them together in various configurations of the two blocks, making the red rectangles very random in their orientation.

Then, the pairs were pieced into quads, 8s, 16s, and 32s.

I added the piano key border (1 1 /2 by 4 1/2. also out of bins) when the top was still at the 32 block stage. I find this makes less distortion with piano keys. Also, I did not press the piano keys until they were sewed to the blocks--this way I could stay stitch the edges of the keys in the directions that made them nest into the blocks.

 After the keys were attached to the blocks and stay stitched, I pressed them and put them back on the board.

By working in sections, I had just one long seam at the end.

The fabric choices--I kept out most reds from the scraps--there are a few--because I wanted the solid reds to shine. The scraps are prints and plaids (lots of shirt parts), lights and mediums and darks.  I made sure each block had some of each.

This is my design. Let me know if you use this idea and where it takes you!

56" by 88"
Top completed July 4, 2013