<HTML>Hi,  I serviced and tuned a Sohmner grand today.It had a bass,mid,and treble section.It had aggraffes on the bass,and mid section,as a lot of pianos do.On the treble section,all the strings went through, what looked like a series of small tunnels, for each unison.On the complete bridge,except for the bass,it had aggraffes all the way up through half of the treble bridge,then finished up with bridge pins.I had never run across anything like this. Always something new, Hazen Bannister </HTML>