I always create a "Dummy" midi track that acts as a scratch track for a score. I connect it to my master midi controller (it is a elec piano) and it is muted 90% of the time. I view it in Staff View and write notes to myself in the expression function. It works well, I copy and paste melodies in it from the real sequenced tracks, insert chords, lyrics and write notes in expression. I can unmute the track and mix into headphones for singers to hear melodies or pitches. Other musicians can follow chords or instructions.
Staff View is under-appriciated.