I split this to a separate thread as it deserves its own life.
We are just now finishing all the STUFF behind updating the KMA Parameters, and preparing new Songbook methods. One of the options we expect will be in 2.216 is to print Songbooks sheets with just Duet songs. That will be a good start for your request.
We have been considering adding check boxes in the Search dialog box to allow you to use the new parameters to find songs. You requested for "Duets". But what about Language, or Genre, or Multiplexed? Others will want that, especially our Hosts who have Spanish lyrics for their South American customers.
