Chad Floyd's solo Summer Treehouse is a wonderful new addition to the marimba repertoire. Both lyrical and groove-based, it strategically places a woodblock between the lower E-flat and G-flat bars to create a transformative new instrument of sorts. The woodblock represents the hammering of a treehouse being built by a neighbor, while the transparent melodic and harmonic content implies the emotions of the young children for whom the treehouse is being built.