"The second button will take you to the muting sub-console.You will want to customize Sinfonia to mute any instruments that are being performed by traditional instruments. This way, Sinfonia only covers the parts that are not present in your usual ensemble. You can mute instruments on a show basis, on a song basis or even for just a small portion of a song. You can also unmute instruments that may have been previously muted. All these tasks can be accomplished in Muting sub-console. When you enter Muting sub-console, you will see a large box with a list of all the instruments scored in the show. Next to each instrument is a Show Mute box and a Song Mute box."