user: 그레이브 디거의 구성원에 대해 설명해 주세요.

gpt: ImageSize = width:800 height:auto barincrement:18
PlotArea = left:120 bottom:90 top:0 right:50
Alignbars = justify
DateFormat = mm/dd/yyyy
Period = from:01/01/1980 till:12/31/2020
TimeAxis = orientation:horizontal format:yyyy
Legend = orientation:vertical position:bottom columns:4
ScaleMajor = increment:2 start:1980
ScaleMinor = increment:1 start:1981

Colors = 
 id:Vocals value:red legend:Vocals
 id:Guitar value:green legend:Guitar
 id:Bass value:blue legend:Bass
 id:Drums value:orange legend:Drums,_percussion
 id:Keyboard value:purple legend:Keyboards,_piano
 id:Lines1 value:black legend:Studio_releases

LineData=
 layer:back
 at:10/30/1984 color:black
 at:05/09/1985 color:black
 at:02/01/1986 color:black
 at:11/02/1993 color:black
 at:04/03/1995 color:black
 at:08/25/1996 color:black
 at:05/18/1998 color:black
 at:09/06/1999 color:black
 at:10/22/2001 color:black
 at:06/03/2003 color:black
 at:01/17/2005 color:black
 at:01/12/2007 color:black
 at:01/27/2009 color:black
 at:10/01/2010 color:black
 at:08/31/2012 color:black
 at:07/11/2014 color:black
 at:01/13/2017 color:black
 at:09/14/2018 color:black
 at:05/29/2020 color:black

BarData = 
 bar:Chris text:Chris Boltendahl
 bar:Peter text:Peter Masson
 bar:Uwe text:Uwe Lulis
 bar:Manni text:Manni Schmidt
 bar:Thilo text:Thilo Hermann
 bar:Axel text:Axel Ritt
 bar:Willi text:Willi Lackman
 bar:C.F text:C.F. Frank
 bar:Tomi text:Tomi Göttlich
 bar:Jens text:Jens Becker
 bar:Lutz text:Lutz Schmelzer
 bar:Philip text:Philip Seibel
 bar:Albert text:Albert Eckardt
 bar:Breitenbach text:Peter Breitenbach
 bar:Jörg text:Jörg Michael
 bar:Frank text:Frank Ulrich
 bar:Stefan text:Stefan Arnold
 bar:H.P text:Hans Peter Katzenburg
 bar:Marcus text:Marcus Kniep

PlotData=
 width:11 textcolor:black align:left anchor:from shift:
 bar:Chris from:01/01/1980 till:07/01/1986 color:Vocals
 bar:Chris from:01/01/1991 till:end color:Vocals
 bar:Peter from:01/01/1980 till:07/01/1986 color:Guitar
 bar:Uwe from:01/01/1991 till:01/01/2000 color:Guitar
 bar:Manni from:01/01/2000 till:07/01/2009 color:Guitar
 bar:Thilo from:01/01/2008 till:07/01/2009 color:Guitar
 bar:Axel from:07/01/2009 till:end color:Guitar
 bar:Willi from:01/01/1983 till:12/31/1984 color:Bass
 bar:C.F from:07/01/1985 till:07/01/1986 color:Bass
 bar:Tomi from:01/01/1991 till:12/31/1997 color:Bass
 bar:Jens from:01/01/1998 till:end color:Bass
 bar:Lutz from:01/01/1980 till:12/31/1980 color:Drums
 bar:Philip from:01/01/1981 till:12/31/1982 color:Drums
 bar:Albert from:01/01/1983 till:07/01/1986 color:Drums
 bar:Breitenbach from:01/01/1991 till:12/31/1992 color:Drums
 bar:Jörg from:01/01/1993 till:12/31/1994 color:Drums
 bar:Frank from:01/01/1995 till:12/31/1995 color:Drums
 bar:Stefan from:01/01/1996 till:06/24/2018 color:Drums
 bar:H.P from:01/01/1996 till:10/01/2014 color:Keyboard
 bar:Marcus from:10/01/2014 till:06/24/2018 color:Keyboard
 bar:Marcus from:06/24/2018 till:end color:Drums

 width:3 textcolor:black align:left anchor:from shift:
 bar:Chris from:01/01/1980 till:12/31/1982 color:Bass
 bar:Chris from:01/01/1985 till:07/01/1985 color:Bass
 bar:Peter from:01/01/1985 till:07/01/1985 color:Bass
 bar:Marcus from:06/24/2018 till:end color:Keyboard