Possible Clues:

• Student thinner when eating right
• Left worker to find student
• Pupil left with profitable job
• Permit holder, maybe
• Student beginning in little job that pays
• Student and lecturer to make most of time
• Someone working for money after end of school or a student?
• Primarily lazy, professional student
• Librettist inspiring a neophyte
• American lyricist said to be someone still developing technique?