Possible Clues:

• Receives sound information in actual practice
• A show trial
• That's all for practice and all for show
• Tries participating in actual practice session
• Tries to get in genuine practice
• Listens once more to a half-century for the practice
• Practice in theatre etc
• Tries in genuine trial run
• Tries to get into Lear, breaking up practice session
• For practice, listens to this in real surroundings