Their instructor sets up little "recitals" around town... usually at coffee houses or in restaurants. The businesses like them because they come with a built in audience of family members and friends (all of whom buy drinks and order food). The students like it because they get experience playing in public.
My parents joined us when we went to Mitch's latest performance. Afterwards, my dad was asking him about the music school, the performances, and how all of this came to be.
My Dad: "How did you get in there?" (Meaning how did the performance get scheduled at this particular restaurant?)
Mitch: "Oh, there are a couple of entrances."