Rachel Eckroth-piano, Corcoran Holt-bass, Jonathan Pinson-drums   Her music is a prowling evolution, full of darkness yet attainable, redeemable light. - AllaboutJazz.com   Polymath (noun): a person of wide-ranging knowledge or learning.   Music needs a term for this. What do you call one person who is a pianist, vocalist, keyboardist, composer, producer, arranger, band leader, sideman […]