Eye tracking enables musical expression for individuals with motor disabilities, yet gaze-based music apps remain scarce and challenging. This study qualitatively evaluates five gaze-controlled musical programs through questionnaires and dialog transcription with seven participants: five music professionals, one person with cerebral palsy expert in multimedia education, and one inclusive communication specialist. The analysis focuses on three eye tracking obstacles: inaccuracy, the Midas Touch problem, and eye fatigue. Results show that under these testing conditions, larger, spaced-out buttons reduce accidental touches, while customizable structures offer advantages; however current programs require assistance rather than enabling autonomous use. Scroll-based interaction proved difficult and accident-prone and is not recommended. Midas Touch and inaccuracy were the most frequent obstacles, while eye fatigue may contribute to interaction overload. Music professionals expressed a need for programs oriented towards musical production, but none of the evaluated applications fully addressed this demand.