 Complete the following phrase:  In the mid-1980s Duncan revived the Quicksilver name and began touring with his own band even releasing an album, Peace by Piece. He released a few more albums into the 1990s with the Quicksilver name but was the only original member in the group except David Freiberg who guested on some tracks. He began touring with a four-piece band up until 2001 when the World Trade Center was 