jazz played in the raucous and high-spirited style of barrelhouse.
Origin of gutbucket
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a highly emotional style of jazz playing
Word Origin for gutbucket
C20: from US gutbucket a cheap gambling saloon where musicians could play for hand-outs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
in reference to jazz, "earthy," by 1929, supposedly originally a reference to the buckets which caught the drippings, or gutterings, from barrels. Which would connect it to gutter (v.).
Online Etymology Dictionary, © 2010 Douglas Harper