Do you address your audience?
Many musicians are excellent at what they do but fall short when it comes to engaging with their fans. An artist who performs with eyes closed while singing is an example.
Another example is a band playing guitar solos that are much longer than their audience can tolerate.
The aim is to transform your audience into fans, and the unique way to do that is to make everyone feel as though you are singing exclusively for them.
After all, they are the ones, who pay your wages.