Professor Low Note is the music instructor at Michael's conservatory. He holds a position of authority, responsible for maintaining discipline and musical standards among students. His primary duties involve overseeing orchestra rehearsals and enforcing attendance.

Michael's repeated tardiness and neglect of practice, due to prioritizing greenhouse gardening, ultimately lead to his dismissal. Professor Low Note expels Michael after persistent lateness culminates in an incident where Michael bursts in late, knocking over instruments and disrupting rehearsal. This action establishes the professor as an enforcer of institutional rules prioritizing musical dedication.

After Michael's transformative journey, he returns with renewed dedication and requests a second chance. Confronted with evidence of Michael's genuine commitment and growth, Professor Low Note reconsiders his stance and allows Michael to rejoin the conservatory.