The best-selling artist of all time is the late Michael Jackson. As of 2021, Michael Jackson has sold over 1.3 billion records, making him the highest-selling music artist in history. He is followed by The Beatles, who have sold over 600 million records. Other popular music artists include Elvis Presley, Madonna, and Mariah Carey.

A cappella music is music or singing without instrumental accompaniment. A cappella music is performed by a group of singers without any instruments, and is often associated with vocal jazz, doo-wop, barbershop, and gospel music. A cappella music is an art form that has been around for centuries, and it has become increasingly popular in the last few decades.

The most popular genre of music depends on the region, but some of the most popular genres worldwide include pop, rock, hip hop, R&B, EDM, country, Latin, and classical. Pop music is the most popular genre in the United States, followed by rock and hip hop. Other popular genres around the world include Bollywood music, K-pop, and reggaeton.