A person who teaches music professionally. This can be at a general school, a music school, or as a private teacher.
example
Mein Musiklehrer hat mir das Gitarrespielen beigebracht.
My music teacher taught me how to play the guitar.
Usage tips
Word composition
The word is built simply and is made up of 'Musik' (music) and 'Lehrer' (teacher). So it literally refers to a person who teaches music.
EXAMPLE
Der neue Musiklehrer an unserer Schule ist sehr beliebt.
The new music teacher at our school is very popular.
Productive compound
The base word 'Lehrer' (teacher) is very productive. You can combine it with many school subjects to refer to the corresponding teacher, for example: 'Deutschlehrer' (German teacher), 'Sportlehrer' (PE teacher), 'Mathelehrer' (math teacher).
EXAMPLE
Meine Mathelehrerin war strenger als mein Musiklehrer.
My math teacher was stricter than my music teacher.
Correct preposition
If you want to say that you take lessons with someone, use the preposition 'bei' (with/from). The pattern is: 'Unterricht bei einem Musiklehrer haben' (to have lessons with a music teacher).
EXAMPLE
Ich nehme seit zwei Jahren Klavierunterricht bei einem privaten Musiklehrer.
I have been taking piano lessons with a private music teacher for two years.
Compare with
confusable
Musiklehrer vs Musiker
musician
'der Musiker' and 'der Musiklehrer' both have to do with music, but they do not describe the same role. A musician makes music, for example on stage, in a studio, or at home. A music teacher teaches music and explains to others how to sing, play an instrument, or understand music. The words can be confused because a music teacher is often also a musician. Still, the focus is different: 'Musiker' is about making music, while 'Musiklehrer' is about teaching.
Musiklehrer
Der Musiklehrer übt mit den Kindern ein neues Lied für die Feier.
The music teacher is practicing a new song with the children for the celebration.
Musiker
Am Wochenende spielt der Musiker bei einem Stadtfest.
At the weekend, the musician is playing at a town festival.