Baden Powell de Aquino, known professionally as Baden Powell, was born on August 6, 1937, in Varre-Sai, Rio de Janeiro, Brazil. He was named after Robert Baden-Powell, the founder of the Boy Scouts, due to his father's admiration for him. Powell's family moved to the São Cristóvão suburb of Rio de Janeiro when he was just a few months old. His early exposure to music came from his father, a shoemaker and violinist, who hosted gatherings with prominent musicians like Pixinguinha and Donga.

Powell began studying guitar at the age of eight under the tutelage of Jayme Florence, a renowned choro guitarist. Demonstrating prodigious talent, he won numerous talent competitions as a child and began playing professionally by the age of fifteen. His early career included performances with the Steve Bernard Orquestra and the Hotel Plaza Trio in Rio, where he gained recognition in the Brazilian jazz scene.

In 1959, Powell's composition "Samba Triste" gained fame with lyrics by Billy Blanco, becoming a hit covered by artists such as Stan Getz and Charlie Byrd. His collaboration with poet Vinicius de Moraes in the 1960s produced significant works, including the influential album "Os Afro-Sambas" in 1966. Powell's music blended classical techniques with Brazilian rhythms, and he was known for his mastery of the guitar, incorporating styles like bossa nova, samba, and Brazilian jazz.

Powell's compositions, such as "Canto de Ossanha" and "Samba Triste," are considered standards in Brazilian music. He continued to perform and record throughout his life, leaving a lasting impact on Brazilian popular music. Baden Powell passed away on September 26, 2000, in Rio de Janeiro, but remains celebrated as one of Brazil's greatest guitarists and composers.