For each sound, listen to Versions A to E. Each has a sound alone button and an as in … button. Choose the one you like best, or None if none are good. The versions are in a different order for each sound. Sounds marked HARD SOUND are the 21 tricky ones. Each version shows who made it. Tap Adjust to change speed or volume; the settings are kept with your choice. Your choices are saved on this device and to Bruce's online record as you go. When finished, tap Save my choices at the bottom.