There are several ways to write a counterpoint exercise:
Please check that counterpoint species was detected correctly for each part (shown in part name) or choose species manually by clicking part name.
If you see mistakes, try to correct them by dragging notes or clicking on them and inputting new notes.
You can also get an MP3 performance with virtual instruments by clicking "Play HQ". If you need more control over virtual instruments selection and tuning, upload a MIDI file to Artinfuser Studio.