Performers need a lot of physical stamina. They have to be prepared to play or sing for several hours, into the wee hours, to finish work late and still be up early if necessary. This occupational profile viz musicians include singers, conductors, composers, music teachers and musical instrument makers and repairers. Conductors are usually performing musicians who specialise in conducting. They learn musical scores and direct performances.
Composers write and arrange music.
They are often performers or academics who specialise in composition. Music teachers are not frustrated performers. They are professionals who genuinely want to communicate, to pass on their musical knowledge and nurture talents. Class teachers are called upon for lots of musical activities in school, playing at essemblies, running the school choir and band and putting on concerts. Instrument teachers work as peripatetic staff visiting a number of schools.