Here are some of the factors that can affect a singer's income:
* Popularity: The more popular a singer is, the more money they can potentially make. This is because they can charge more for concerts, get more endorsement deals, and sell more albums and merchandise.
* Audience size: The size of a singer's audience is also important. The more people who listen to their music, the more money they can potentially make. This is because they can sell more albums, merchandise, and concert tickets.
* Number of concerts: The number of concerts a singer performs can also affect their income. The more concerts they perform, the more money they can make. This is because they can charge more for each concert, and they can also get more endorsement deals.
* Endorsements: Endorsements can be a significant source of income for popular singers. When a singer endorses a product or service, they receive a payment from the company. The amount of money they receive can vary depending on the size of the company, the product or service, and the singer's popularity.
Overall, the amount of money a popular singer makes can vary widely depending on a number of factors. However, some of the most popular singers in the world can make millions of dollars per year.