Home Jambase Scott Metzger Among Guests Expected To Fill-In For Gregg Allman TonightNational Music NewsJambaseMusicScott Metzger Among Guests Expected To Fill-In For Gregg Allman TonightNovember 7, 2016807FacebookTwitterPinterestWhatsApp A handful of guests will join the Gregg-less Gregg Allman Band at City Winery in New York City on Monday night.