You can do a rapid alternation of notes, either half-step or whole-step with no space between the notes. It's simple to do it yourself. If you have access to a piano roll view in your sequencer, overlap the notes just slightly.
I'd like to know how I can do trills for woodwinds instruments in GPO4?
Hi, Fred - I don't think the real issue has been addressed yet in the responses you've gotten.
Something I wish wouldn't have happened with the upgrade of GPO to the Aria player (GPO4) is that what were soloists in the previous GPO are now polyphonic. That's what's preventing you from playing trills the way you want.
That's where "Auto Legato" comes in very handy. When that's turned on for an instrument, you have monophonic playback, and a better version of it than in KP2, because actual trills can be played by holding down one note and tapping the needed trill note.
Auto Legato is meant as an automated way to achieve the legato we used to only do with the sustain pedal, cc64, but I find it doesn't sound as good as the previously established method - so I still use cc64 for legato--But turn AL on when I want trills.