Middle class people tend to have more disposable income than lower class people, which gives them more freedom to pursue leisure activities such as music, painting, and acting. They also tend to have more leisure time, as they are less likely to be working multiple jobs or struggling to make ends meet.
Education and cultural capital
Middle class people are more likely to have a higher level of education than lower class people, which gives them access to more cultural resources and opportunities. They are also more likely to have parents who were involved in the arts, which can inspire them to pursue their own artistic interests.
Social networks and peer groups
Middle class people are more likely to have social networks and peer groups that value and encourage artistic pursuits. They are more likely to know other people who are involved in the arts, which can provide them with support, inspiration, and opportunities to perform or exhibit their work.
Stereotypes and expectations
There is a stereotype that middle class people are more cultured and refined than lower class people, which can lead to middle class people feeling more pressure to conform to this stereotype. This can motivate them to pursue artistic activities in order to appear more cultured and sophisticated.
Of course, there are many lower class people who are involved in the arts, and many middle class people who are not. These factors are not absolute, but they do help to explain why middle class people are more likely to play music, paint, and act.