Holly Bowling has announced the release of Better Left Unsung, a collection of solo classical improvisations and arrangements of The Grateful Dead, due December 9 on Royal Potato Family. A classically trained pianist, Bowling possesses one distinction that sets her apart from similarly studied musicians—a devotion to improvisational rock music and the vision to painstakingly transcribe “jam” masterworks note-for-note, arranging them for solo piano and improvising upon what was already wri