Home Jambase Full Set Audio: Greensky Bluegrass Fills Halloween Set With Songs Phish CoveredNational Music NewsJambaseMusicFull Set Audio: Greensky Bluegrass Fills Halloween Set With Songs Phish CoveredNovember 2, 2016950FacebookTwitterPinterestWhatsApp Listen to Greensky Bluegrass’s Halloween matinee set in Las Vegas filled with 18 songs Phish has covered in the past.