Wild Rumpus was a contemporary chamber music ensemble dedicated to performing the music of the present. Founded in San Francisco by composer Jen Wang in 2011, the ensemble brought together stellar musicians who share a passion for risk-taking, collaboration, and working with living composers. During its eight-year existence the group commissioned over thirty new works, showcasing premieres alongside new music highlighting shared threads of influence and inspiration.

In 2019, Wild Rumpus and Composers, Inc. merged to form a new ensemble, Ninth Planet, comprising most of the performers heard on the Pinna release Vestige. Ninth Planet continues the traditions of both organizations by commissioning new works and performing existing, innovative pieces that stretch the genre’s limits.