I have created a virtual tag, Virtual2, with value
$IsNull(<Composer>,,"("<Composer>")")
And set
Preferences > Now Playing > playback > scroll in player as:
<Artist> - <Title> <Virtual2>
It functions as expected when the <Composer> field is not empty, that is, it displays (for instance),
Cake - Sad Songs And Waltzes (Willie Nelson). However, when the <Composer> field is empty,
Cake - Comanche Unknown Virtual2 is displayed. What am I doing wrong here?