What is the name of Warren Buffett's younger son, a musician?

The name of Warren Buffett's younger son, a musician, is Peter Buffett.

Peter Andrew Buffett, born in Omaha in 1958, is Warren Buffett's youngest son. He is a musician, composer, author, and philanthropist whose career has included recording, producing, and composing music for films, television, advertising, and documentary projects.

Peter's music career began in the 1980s, when he worked in San Francisco and composed advertising music. He later released albums and created the soundtrack for the CBS miniseries 500 Nations, produced by Kevin Costner. He has also worked with artists and performers in projects combining music, dance, and Indigenous cultural traditions.

A common mix-up is confusing Peter with his older brother, Howard Graham Buffett, who is known primarily for agriculture, conservation, photography, and philanthropy. Peter is also distinct from singer-songwriter Jimmy Buffett, who was not Warren Buffett's brother or son. Peter has co-chaired the NoVo Foundation with his wife, Jennifer Buffett.