Tennessee Waltz is just 54-40 or Fight combined with an alternate Snowball block. I was first introduced to in Judy Martin's Scrap Quilts book which really changed my quilting career. I had never seen a scrap quilt I liked prior to it, and now some 30 years later almost all my quilts are scrappy.
I show one of my unfinished tops and tell the story here:
Unfinished Quilt Stories
I think this one done by Cattitude is gorgeous! She alternated with 9-patches.
54/40 For BIL