Member:
1988-1989 Joe Satriani - bass  
1989-1991 Steve Vai - bass  
1997-1998 Joe Satriani - bass  
2003 Michael Schenker Group - bass  
2008-2009 Joe Satriani - bass  
Live musician:
2001 Joe Satriani - bass  
Guest musician:
1982-1984 Steve Vai - bass, vocals  
1993 Joe Satriani - bass