it should be: G, A flat, D for a minor triad and G, B, D for a major triad.
The British Invasion was a movement of the 60s where musicians from the U.K. would come to the United States to perform and share their British culture. One of the most famous groups that was a part of the movement was the Beatles and they impacted pop music by bringing new sounds through their song writing
He refused to get a job, we learned about him in the 4th grade arts class