Play by ear, thousands of pop songs.
Seeing people make music and learn about the great performers of the pasdt. How songs work, how music heals, inspires, unites.
He is easy to work with, and knowledgable.
Seeing what interests them. Finding what they know about music, past and present. Suggesting songs to suit them.
School of Rock. St Peter's School Cambridge, many years pro player internationally. Music TV producer. See website. My partner Robin teaches singing too.
I recommend practice and researching music on You Tube etc.