- Choose Window > Score Manager. 
 The Score Manager appears.
 
            - Click the Mute button for each staff you want 
 to silence, or click the Solo button to silence all other staves). In 
 other words, if your score has 40 staves, and you just want to hear the 
 piano part, it’s much quicker to click Solo for the two piano staves than 
 to mute the other 38 staves. But if you want to hear everything but the 
 piano, click in the Play button for the piano staves. If both Mute and 
 Solo are selected for the same staff, Mute overrides Solo.