Who was the unfortunate music teacher killed by Heracles during a lesson gone wrong?

The music teacher who was tragically killed by Heracles during a lesson gone awry is Linus. In Greek mythology, Linus is recognized as a skilled musician and instructor who taught Heracles how to play the lyre. However, their relationship turned violent when Linus, in an effort to correct Heracles for his lack of musical aptitude, was met with the young hero's rage. In a moment of anger, Heracles struck Linus, leading to his death. This story reflects the theme of the clash between mentors and their students, particularly in the context of ancient myths where violent outcomes sometimes followed disputes over skill and discipline.

Other figures mentioned, such as Apollo and Orpheus, are renowned for their musical talents but do not align with the narrative involving Heracles' unfortunate act against Linus. Thamyris is another figure associated with music, but he is known more for his hubris and different tales in myth rather than a direct encounter with Heracles. Thus, Linus stands out as the specific teacher associated with the tragic incident involving Heracles.